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Example 2 John tried to finish the work.
Initial Stream: ['work', 'n_sg_3rd', 'the', 'finish', 'v*', ['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']

Successful Derivation 1
Successful Derivation 2
Successful Derivation 3
Successful Derivation 4


Merge 1
Merge: set-Merge
Stream: ['the', 'finish', 'v*', ['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 2
Merge: pair-Merge
Stream: ['finish', 'v*', ['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Label stays
the same:



Merge 3
Merge: set-Merge
Stream: ['v*', ['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 4
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:


Substream
Stream: ['John_1', 'n_3rd_sg']

Merge 5
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 6
Merge: set-Merge
Stream: [['John_1', 'n_3rd_sg'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 7
Merge: set-Merge
Stream: ['try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Operations: Checked Features: 'uPerson'
Unlabeled:


Merge 8
Merge: set-Merge
Stream: ['v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 9
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 10
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 11
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 12
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 13
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #2
Continued from Merge 12

Merge 14
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 15
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #3
Continued from Merge 14

Merge 16
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 17
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #4
Continued from Merge 12

Merge 18
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 19
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n John2 T(Past,3rd,sg) v try toT v* finish the n work
PF Rules: John2 T(Past,3rd,sg)+try
John tried to finish the work

Successful Derivation 1
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #5
Continued from Merge 18

Merge 20
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 21
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #6
Continued from Merge 11

Merge 22
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['n_3rd_sg', 'John_2']

Merge 23
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 24
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 25
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #7
Continued from Merge 24

Merge 26
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 27
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #8
Continued from Merge 26

Merge 28
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 29
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #9
Continued from Merge 24

Merge 30
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 31
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #10
Continued from Merge 30

Merge 32
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 33
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #11
Continued from Merge 9

Merge 34
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 35
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 36
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 37
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 38
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #12
Continued from Merge 37

Merge 39
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 40
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #13
Continued from Merge 39

Merge 41
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 42
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #14
Continued from Merge 37

Merge 43
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 44
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #15
Continued from Merge 43

Merge 45
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 46
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #16
Continued from Merge 8

Merge 47
Merge: set-Merge
Stream: ['v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 48
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 49
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 50
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 51
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 52
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #17
Continued from Merge 51

Merge 53
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 54
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #18
Continued from Merge 53

Merge 55
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 56
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #19
Continued from Merge 51

Merge 57
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 58
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n John2 T(Past,3rd,sg) v try toT v* finish the n work
PF Rules: John2 T(Past,3rd,sg)+try
John tried to finish the work

Successful Derivation 2
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #20
Continued from Merge 57

Merge 59
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 60
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #21
Continued from Merge 50

Merge 61
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['n_3rd_sg', 'John_2']

Merge 62
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 63
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 64
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #22
Continued from Merge 63

Merge 65
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 66
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #23
Continued from Merge 65

Merge 67
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 68
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #24
Continued from Merge 63

Merge 69
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 70
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #25
Continued from Merge 69

Merge 71
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 72
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #26
Continued from Merge 48

Merge 73
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 74
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 75
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 76
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 77
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #27
Continued from Merge 76

Merge 78
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 79
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #28
Continued from Merge 78

Merge 80
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 81
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #29
Continued from Merge 76

Merge 82
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 83
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #30
Continued from Merge 82

Merge 84
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 85
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #31
Continued from Merge 7

Merge 86
Merge: set-Merge
Stream: ['try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 87
Merge: set-Merge
Stream: ['v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 88
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 89
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 90
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 91
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 92
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #32
Continued from Merge 91

Merge 93
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 94
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #33
Continued from Merge 93

Merge 95
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 96
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #34
Continued from Merge 91

Merge 97
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 98
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n John2 T(Past,3rd,sg) v try toT v* finish the n work
PF Rules: John2 T(Past,3rd,sg)+try
John tried to finish the work

Successful Derivation 3
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #35
Continued from Merge 97

Merge 99
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 100
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #36
Continued from Merge 90

Merge 101
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['n_3rd_sg', 'John_2']

Merge 102
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 103
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 104
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #37
Continued from Merge 103

Merge 105
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 106
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #38
Continued from Merge 105

Merge 107
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 108
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #39
Continued from Merge 103

Merge 109
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 110
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #40
Continued from Merge 109

Merge 111
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 112
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #41
Continued from Merge 88

Merge 113
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 114
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 115
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 116
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 117
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #42
Continued from Merge 116

Merge 118
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 119
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #43
Continued from Merge 118

Merge 120
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 121
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #44
Continued from Merge 116

Merge 122
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 123
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #45
Continued from Merge 122

Merge 124
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 125
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #46
Continued from Merge 87

Merge 126
Merge: set-Merge
Stream: ['v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 127
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 128
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 129
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 130
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 131
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #47
Continued from Merge 130

Merge 132
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 133
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #48
Continued from Merge 132

Merge 134
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 135
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #49
Continued from Merge 130

Merge 136
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 137
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n John2 T(Past,3rd,sg) v try toT v* finish the n work
PF Rules: John2 T(Past,3rd,sg)+try
John tried to finish the work

Successful Derivation 4
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #50
Continued from Merge 136

Merge 138
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 139
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #51
Continued from Merge 129

Merge 140
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['n_3rd_sg', 'John_2']

Merge 141
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 142
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 143
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #52
Continued from Merge 142

Merge 144
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 145
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #53
Continued from Merge 144

Merge 146
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 147
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #54
Continued from Merge 142

Merge 148
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 149
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #55
Continued from Merge 148

Merge 150
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 151
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #56
Continued from Merge 127

Merge 152
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['John_2', 'n_3rd_sg']

Merge 153
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 154
Merge: set-Merge
Stream: [['John_2', 'n_3rd_sg'], 'Tpast', 'C']
Unlabeled:


Merge 155
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 156
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #57
Continued from Merge 155

Merge 157
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 158
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #58
Continued from Merge 157

Merge 159
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 160
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #59
Continued from Merge 155

Merge 161
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 162
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #60
Continued from Merge 161

Merge 163
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 164
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:
Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #61
Continued from Merge 3

Merge 165
Merge: set-Merge
Stream: ['v*', ['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 166
Merge: set-Merge
Stream: [['n_3rd_sg', 'John_1'], 'toT', 'try', 'v', ['n_3rd_sg', 'John_2'], 'Tpast', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Crash (Unlabeled):

# of Backtracks: 60
# of Crashes: 57
# of Successful Derivations: 4

Top