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Example 14 Susan is fond of swimming.
Initial Stream: ['swim', 'v', 'n_ing', 'P_of', 'fond', 'adj', ['n_3rd_fem_sg', 'Susan'], 'be', 'v', 'Tpres', 'C']

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


Merge 1
Merge: set-Merge
Stream: ['n_ing', 'P_of', 'fond', 'adj', ['n_3rd_fem_sg', 'Susan'], 'be', 'v', 'Tpres', 'C']
Unlabeled:


Merge 2
Merge: set-Merge
Stream: ['P_of', 'fond', 'adj', ['n_3rd_fem_sg', 'Susan'], 'be', 'v', 'Tpres', 'C']
Unlabeled:


Merge 3
Merge: set-Merge
Stream: ['fond', 'adj', ['n_3rd_fem_sg', 'Susan'], 'be', 'v', 'Tpres', 'C']
Operations: Agree: (of,ning)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:
Label from
Head:

Label from
Head:

Label from
Head:



Merge 4
Merge: set-Merge
Stream: ['adj', ['n_3rd_fem_sg', 'Susan'], 'be', 'v', 'Tpres', 'C']
Unlabeled:


Merge 5
Merge: set-Merge
Stream: [['n_3rd_fem_sg', 'Susan'], 'be', 'v', 'Tpres', 'C']
Unlabeled:

Substream
Stream: ['Susan', 'n_3rd_fem_sg']

Merge 6
Merge: set-Merge
Stream: []
Unlabeled:

Main Stream


Merge 7
Merge: set-Merge
Stream: [['Susan', 'n_3rd_fem_sg'], 'be', 'v', 'Tpres', 'C']
Unlabeled:


Merge 8
Merge: set-Merge
Stream: ['v', 'Tpres', 'C']
Unlabeled:


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


Merge 10
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpres,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 11
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:

Crash (Unlabeled):

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

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


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

Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Transfer:
Frontier:

Spell Out: C n Susan T(Pres,3rd,sg) v be adj fond of ning v swim
PF Rules: Susan T(Pres,3rd,sg)+v
Susan is fond of ning+swim
Susan is fond of swimming

Successful Derivation 1
Top

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

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


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


Merge 16
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:

Label via
movement:

Crash (Unlabeled):

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

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label via
movement:

Transfer:
Frontier:

Spell Out: C n Susan T(Pres,3rd,sg) v be adj fond of ning v swim
PF Rules: Susan T(Pres,3rd,sg)+v
Susan is fond of ning+swim
Susan is fond of swimming

Successful Derivation 2
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #5
Continued from Merge 8

Merge 19
Merge: set-Merge
Stream: ['v', 'Tpres', 'C']
FormCopy:
Unlabeled:


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


Merge 21
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpres,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 22
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:

Label via
movement:

Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #6
Continued from Merge 21

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


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

Label from
Head:

Label via
shared features:

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 via
movement:

Transfer:
Frontier:

Spell Out: C n Susan T(Pres,3rd,sg) v be adj fond of ning v swim
PF Rules: Susan T(Pres,3rd,sg)+v
Susan is fond of ning+swim
Susan is fond of swimming

Successful Derivation 3
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #7
Continued from Merge 20

Merge 25
Merge: set-Merge
Stream: ['Tpres', 'C']
FormCopy:
Unlabeled:


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


Merge 27
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:

Label from
Head:

Label via
movement:

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']
FormCopy:
Unlabeled:


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

Label from
Head:

Label via
shared features:

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 via
movement:

Label via
movement:

Label via
movement:

Transfer:
Frontier:

Spell Out: C n Susan T(Pres,3rd,sg) v be adj fond of ning v swim
PF Rules: Susan T(Pres,3rd,sg)+v
Susan is fond of ning+swim
Susan is fond of swimming

Successful Derivation 4
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# of Backtracks: 7
# of Crashes: 4
# of Successful Derivations: 4

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