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Example 1 We expect there to be awarded several prizes./We expect there to be several prizes awarded. (Chomsky 2001:7)
Initial Stream: ['prize', 'n_pl_3rd', 'several', 'award', 'v', ['n_Expl', 'there'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']

Successful Derivation 1
Successful Derivation 2


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


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



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


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

Substream
Stream: ['there', 'n_Expl']

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

Main Stream


Merge 6
Merge: set-Merge
Stream: [['there', 'n_Expl'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 7
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Unified Features: uPerson
Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 8
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,Psv)
Checked Features: 'uPerson'
Unlabeled:


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


Merge 10
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
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:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #2
Continued from Merge 9

Merge 11
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 12
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
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:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #3
Continued from Merge 9

Merge 13
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 14
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
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:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #4
Continued from Merge 8

Merge 15
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


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


Merge 17
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label via
shared Person:

Label from
Head:

Label from
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Label from
Head:

Label from
Head:

Label from
Head:

Label from
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Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #5
Continued from Merge 16

Merge 18
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 19
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label from
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Label via
shared Person:

Label from
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Label from
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Label from
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Label from
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Label from
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Label via
movement:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #6
Continued from Merge 8

Merge 20
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 21
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 22
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:


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

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

Main Stream


Merge 24
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 25
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpres,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 26
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #7
Continued from Merge 25

Merge 27
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 28
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
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Label via
shared features:

Label from
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Label from
Head:

Label via
movement:

Transfer:
Frontier:

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

Successful Derivation 1
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #8
Continued from Merge 21

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


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

Label from
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Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
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Label via
movement:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #9
Continued from Merge 7

Merge 31
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 32
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,n)
Checked Features: 'uPerson'
Unlabeled:


Merge 33
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 34
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label from
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Label via
shared features:

Label from
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Label from
Head:

Label from
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Label from
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Label from
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Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #10
Continued from Merge 33

Merge 35
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 36
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
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Label from
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Label via
shared features:

Label from
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Label from
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Label from
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Label from
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Label via
movement:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #11
Continued from Merge 32

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


Merge 38
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 39
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label via
shared features:

Label from
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Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:


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

Merge 40
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 41
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 42
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpres,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 43
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #12
Continued from Merge 42

Merge 44
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


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

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label via
movement:

Transfer:
Frontier:

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

Successful Derivation 2
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #13
Continued from Merge 7

Merge 46
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 47
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,n)
Checked Features: 'uPerson'
Unlabeled:


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: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
Head:

Label from
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Label via
movement:

Label from
Head:

Label from
Head:


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

Merge 50
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 51
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 52
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpres,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 53
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #14
Continued from Merge 52

Merge 54
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 55
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label from
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Label via
shared features:

Label from
Head:

Label from
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Label via
movement:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #15
Continued from Merge 48

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


Merge 57
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label from
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Label from
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Label from
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Label via
shared Person:

Label from
Head:

Label from
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Label from
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Label via
movement:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #16
Continued from Merge 47

Merge 58
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 59
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 60
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label via
shared Person:

Label from
Head:

Label from
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Label from
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Label via
shared Person:

Label from
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Label from
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Label from
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Label via
movement:

Label from
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Label from
Head:


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

Merge 61
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 62
Merge: set-Merge
Stream: [['we', 'n_pl_1st'], 'Tpres', 'C']
Unlabeled:


Merge 63
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpres,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


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

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #17
Continued from Merge 63

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


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

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label via
movement:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #18
Continued from Merge 6

Merge 67
Merge: set-Merge
Stream: [['there', 'n_Expl'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:

Substream
Stream: ['n_Expl', 'there']

Merge 68
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 69
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 70
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,Psv)
Checked Features: 'uPerson'
Unlabeled:


Merge 71
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 72
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
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Label from
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Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Operations: Unchecked Features: uPerson
Crash (Unchecked Feature):

Backtrack (check for another possible derivation: Free Merge): Attempt: #19
Continued from Merge 71

Merge 73
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 74
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Unified Features: uPerson
Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label from
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Label from
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Label from
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Label from
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Label from
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Label from
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Label via
movement:

Label from
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Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #20
Continued from Merge 70

Merge 75
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
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: Unified Features: uPerson
Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
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Label from
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Label from
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Label from
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Label via
movement:

Label from
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Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #21
Continued from Merge 69

Merge 78
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 79
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Unified Features: uPerson
Agree: (toT,Psv)
Checked Features: 'uPerson'
Unlabeled:


Merge 80
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 81
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label from
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Label from
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Label via
shared Person:

Label from
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Label from
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Label from
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Label from
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Label via
movement:

Label from
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Label from
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Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #22
Continued from Merge 4

Merge 82
Merge: set-Merge
Stream: [['n_Expl', 'there'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:

Substream
Stream: ['there', 'n_Expl']

Merge 83
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 84
Merge: set-Merge
Stream: [['there', 'n_Expl'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 85
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Unified Features: uPerson
Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 86
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,Psv)
Checked Features: 'uPerson'
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: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

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Label from
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Label from
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Label from
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Label from
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Label from
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Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #23
Continued from Merge 87

Merge 89
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 90
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
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Label from
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Label from
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Label from
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Label from
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Label from
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Label from
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Label from
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Label from
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Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #24
Continued from Merge 86

Merge 91
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 92
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 93
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
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Label from
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Label from
Head:

Label from
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Label from
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Label from
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Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #25
Continued from Merge 85

Merge 94
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 95
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,n)
Checked Features: 'uPerson'
Unlabeled:


Merge 96
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 97
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #26
Continued from Merge 3

Merge 98
Merge: set-Merge
Stream: ['v', ['n_Expl', 'there'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 99
Merge: set-Merge
Stream: [['n_Expl', 'there'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:

Substream
Stream: ['there', 'n_Expl']

Merge 100
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 101
Merge: set-Merge
Stream: [['there', 'n_Expl'], 'Psv', 'toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 102
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Unified Features: uPerson
Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 103
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,Psv)
Checked Features: 'uPerson'
Unlabeled:


Merge 104
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 105
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
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:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #27
Continued from Merge 104

Merge 106
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 107
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
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:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #28
Continued from Merge 103

Merge 108
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 109
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 110
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #29
Continued from Merge 102

Merge 111
Merge: set-Merge
Stream: ['toT', 'expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
FormCopy:
Unlabeled:


Merge 112
Merge: set-Merge
Stream: ['expect', 'v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (toT,n)
Checked Features: 'uPerson'
Unlabeled:


Merge 113
Merge: set-Merge
Stream: ['v*', ['n_pl_1st', 'we'], 'Tpres', 'C']
Unlabeled:


Merge 114
Merge: set-Merge
Stream: [['n_pl_1st', 'we'], 'Tpres', 'C']
Operations: Agree: (v*,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
shared Person:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

# of Backtracks: 28
# of Crashes: 27
# of Successful Derivations: 2

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