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Example 16 Frank began swimming.
Initial Stream: ['swim', 'v', ['n_3rd_msc_sg', 'Frank_1'], 'T_ing', 'C', 'begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']

Successful Derivation 1


Merge 1
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'Frank_1'], 'T_ing', 'C', 'begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Unlabeled:

Substream
Stream: ['Frank_1', 'n_3rd_msc_sg']

Merge 2
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 3
Merge: set-Merge
Stream: [['Frank_1', 'n_3rd_msc_sg'], 'T_ing', 'C', 'begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Unlabeled:


Merge 4
Merge: set-Merge
Stream: ['C', 'begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Operations: Agree: (Ting,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 5
Merge: set-Merge
Stream: ['begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Unlabeled:
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 4

Merge 6
Merge: set-Merge
Stream: ['C', 'begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 7
Merge: set-Merge
Stream: ['begin', 'v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Unlabeled:
Label from
Head:

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:



Merge 8
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Unlabeled:


Merge 9
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Operations: Agree: (v*,C)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:


Substream
Stream: ['Frank_2', 'n_3rd_msc_sg']

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

Main Stream


Merge 11
Merge: set-Merge
Stream: [['Frank_2', 'n_3rd_msc_sg'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 12
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 13
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 12

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


Merge 15
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 Frank2 T(Past,3rd,sg) v* begin C $n -ing v swim
PF Rules: Frank2 T(Past,3rd,sg)+begin
Frank2 began ∅/himself Ting+swim
Frank began ∅/himself swimming

Successful Derivation 1
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Backtrack (check for another possible derivation: Free Merge): Attempt: #4
Continued from Merge 8

Merge 16
Merge: set-Merge
Stream: ['v*', ['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 17
Merge: set-Merge
Stream: [['n_3rd_msc_sg', 'Frank_2'], 'Tpast', 'C']
Operations: Agree: (v*,C)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Crash (Unlabeled):

# of Backtracks: 3
# of Crashes: 3
# of Successful Derivations: 1

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