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Example 5 We expect several prizes to be awarded. (Chomsky 2001: 7)
Initial Stream: ['prize', 'n_pl_3rd', 'several', 'award', 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']

Successful Derivation 1
Successful Derivation 2
Successful Derivation 3
Successful Derivation 4
Successful Derivation 5


Merge 1
Merge: set-Merge
Stream: ['several', 'award', 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 2
Merge: pair-Merge
Stream: ['award', 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Label stays
the same:



Merge 3
Merge: set-Merge
Stream: ['Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 4
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 5
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson'
Unlabeled:


Merge 6
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 7
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:


Substream
Stream: ['we', 'n_pl_1st']

Merge 8
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 9
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 10
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 11
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #2
Continued from Merge 10

Merge 12
Merge: set-Merge
Stream: ['C']
Unlabeled:


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

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n we T(Pres,1st,pl) v* expect toT be -en award several n prize
PF Rules: we T(Pres,1st,pl)+expect
we expect to be -en+award
we expect to be awarded several prizes

Successful Derivation 1
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #3
Continued from Merge 6

Merge 14
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 15
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #4
Continued from Merge 5

Merge 16
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 17
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 18
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:

Substream
Stream: ['we', 'n_pl_1st']

Merge 19
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 20
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 21
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 22
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #5
Continued from Merge 21

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


Merge 24
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n we T(Pres,1st,pl) v* expect several n prize toT be -en award
PF Rules: we T(Pres,1st,pl)+expect
we expect several prizes to be -en+award
we expect several prizes to be awarded

Successful Derivation 2
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #6
Continued from Merge 17

Merge 25
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 26
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #7
Continued from Merge 4

Merge 27
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 28
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson'
Unlabeled:


Merge 29
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 30
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:

Substream
Stream: ['we', 'n_pl_1st']

Merge 31
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 32
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 33
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 34
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #8
Continued from Merge 33

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


Merge 36
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

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 29

Merge 37
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 38
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #10
Continued from Merge 28

Merge 39
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 40
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 41
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:

Substream
Stream: ['we', 'n_pl_1st']

Merge 42
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 43
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 44
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 45
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #11
Continued from Merge 44

Merge 46
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 47
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n we T(Pres,1st,pl) v* expect several n prize toT be -en award
PF Rules: we T(Pres,1st,pl)+expect
we expect several prizes to be -en+award
we expect several prizes to be awarded

Successful Derivation 3
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #12
Continued from Merge 40

Merge 48
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 49
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #13
Continued from Merge 3

Merge 50
Merge: set-Merge
Stream: ['Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 51
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 52
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson'
Unlabeled:


Merge 53
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 54
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:

Substream
Stream: ['we', 'n_pl_1st']

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

Main Stream


Merge 56
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 57
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


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

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #14
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 via
shared features:

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 53

Merge 61
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 62
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #16
Continued from Merge 52

Merge 63
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 64
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 65
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

FormCopy:
Label from
Head:

Label via
movement:

Label from
Head:

FormCopy:

Substream
Stream: ['we', 'n_pl_1st']

Merge 66
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 67
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 68
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 69
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #17
Continued from Merge 68

Merge 70
Merge: set-Merge
Stream: ['C']
Unlabeled:


Merge 71
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n we T(Pres,1st,pl) v* expect several n prize toT be -en award
PF Rules: we T(Pres,1st,pl)+expect
we expect several prizes to be -en+award
we expect several prizes to be awarded

Successful Derivation 4
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #18
Continued from Merge 64

Merge 72
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 73
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):

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

Merge 74
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 75
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson'
Unlabeled:


Merge 76
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 77
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:

Substream
Stream: ['we', 'n_pl_1st']

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

Main Stream


Merge 79
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 80
Merge: set-Merge
Stream: ['C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


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

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #20
Continued from Merge 80

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 via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #21
Continued from Merge 76

Merge 84
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 85
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #22
Continued from Merge 75

Merge 86
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 87
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 88
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:

Substream
Stream: ['we', 'n_pl_1st']

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

Main Stream


Merge 90
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', '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:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #23
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 via
shared features:

Label from
Head:

Label from
Head:

FormCopy:
Label via
movement:

Transfer:
Frontier:

Spell Out: C n we T(Pres,1st,pl) v* expect several n prize toT be -en award
PF Rules: we T(Pres,1st,pl)+expect
we expect several prizes to be -en+award
we expect several prizes to be awarded

Successful Derivation 5
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #24
Continued from Merge 87

Merge 95
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 96
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Checked Features: 'uPerson' 'uNumber' 'uGender'
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:
Crash (Unlabeled):


# of Merges: 96
# of Backtracks: 23
# of Crashes: 217
# of Successful Derivations: 5

Top