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Example 10 John preferred using the supercomputer.
Initial Stream: ['supercomputer', 'n_3rd_sg', 'the', 'use', 'v*', ['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']

Successful Derivation 1


Merge 1
Merge: set-Merge
Stream: ['the', 'use', 'v*', ['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 2
Merge: pair-Merge
Stream: ['use', 'v*', ['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Label stays
the same:



Merge 3
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 4
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:


Substream
Stream: ['John_1', 'n_3rd_msc_sg']

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

Main Stream


Merge 6
Merge: set-Merge
Stream: [['John_1', 'n_3rd_msc_sg'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 7
Merge: set-Merge
Stream: ['C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Operations: Agree: (Ting,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 8
Merge: set-Merge
Stream: ['prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #2
Continued from Merge 7

Merge 9
Merge: set-Merge
Stream: ['C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 10
Merge: set-Merge
Stream: ['prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label via
movement:



Merge 11
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 12
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Operations: Agree: (v*,C)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:


Substream
Stream: ['John_2', 'n_3rd_msc_sg']

Merge 13
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 14
Merge: set-Merge
Stream: [['John_2', 'n_3rd_msc_sg'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 15
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 16
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: #3
Continued from Merge 15

Merge 17
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 18
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:

Spell Out: C n John2 T(Past,3rd,sg) v* prefer C $n -ing v* use the n supercomputer
PF Rules: John2 T(Past,3rd,sg)+prefer
John2 preferred ∅/himself Ting+use
John preferred ∅/himself using the supercomputer

Successful Derivation 1
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Backtrack (check for another possible derivation: Free Merge): Attempt: #4
Continued from Merge 11

Merge 19
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 20
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Operations: Agree: (v*,C)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #5
Continued from Merge 3

Merge 21
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 22
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Operations: Agree: (v*,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Crash (Unlabeled):

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

Merge 23
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:


Merge 24

Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'John_1'], 'T_ing', 'C', 'prefer', 'v*', ['n_3rd_msc_sg', 'John_2'], 'Tpast', 'C']
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:

# of Backtracks: 5
# of Crashes: 4
# of Successful Derivations: 1

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