Backtrack (check for another possible derivation: Free Merge): Attempt: #487
Continued from Merge 1457

Merge 1462

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


Merge 1463
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1464
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 via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #488
Continued from Merge 1463

Merge 1465
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1466
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 184
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #489
Continued from Merge 1444

Merge 1467
Merge: set-Merge
Stream: ['v', 'Psv', 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1468
Merge: set-Merge
Stream: ['Psv', 'Tpast', 'C']
Unlabeled:


Merge 1469
Merge: set-Merge
Stream: ['Tpast', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1470
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1471
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:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

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: #490
Continued from Merge 1470

Merge 1472
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1473
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

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:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 185
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #491
Continued from Merge 1469

Merge 1474
Merge: set-Merge
Stream: ['Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1475
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1476
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 via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #492
Continued from Merge 1475

Merge 1477
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1478
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 186
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #493
Continued from Merge 1468

Merge 1479
Merge: set-Merge
Stream: ['Psv', 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1480
Merge: set-Merge
Stream: ['Tpast', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1481
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1482
Merge: set-Merge
Stream: []
Unlabeled:
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:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

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: #494
Continued from Merge 1481

Merge 1483
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1484
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 187
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #495
Continued from Merge 1480

Merge 1485
Merge: set-Merge
Stream: ['Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1486
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1487
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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #496
Continued from Merge 1486

Merge 1488
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1489
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 188
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #497
Continued from Merge 1443

Merge 1490
Merge: set-Merge
Stream: ['believe', 'v', 'Psv', 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1491
Merge: set-Merge
Stream: ['v', 'Psv', 'Tpast', 'C']
Unlabeled:


Merge 1492
Merge: set-Merge
Stream: ['Psv', 'Tpast', 'C']
Unlabeled:


Merge 1493
Merge: set-Merge
Stream: ['Tpast', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1494
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1495
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #498
Continued from Merge 1494

Merge 1496
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1497
Merge: set-Merge
Stream: []
Unlabeled:
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:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #499
Continued from Merge 1493

Merge 1498
Merge: set-Merge
Stream: ['Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1499
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1500
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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #500
Continued from Merge 1499

Merge 1501
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1502
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #501
Continued from Merge 1492

Merge 1503
Merge: set-Merge
Stream: ['Psv', 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1504
Merge: set-Merge
Stream: ['Tpast', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1505
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1506
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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

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: #502
Continued from Merge 1505

Merge 1507
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1508
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #503
Continued from Merge 1504

Merge 1509
Merge: set-Merge
Stream: ['Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1510
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1511
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 via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #504
Continued from Merge 1510

Merge 1512
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1513
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #505
Continued from Merge 1491

Merge 1514
Merge: set-Merge
Stream: ['v', 'Psv', 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1515
Merge: set-Merge
Stream: ['Psv', 'Tpast', 'C']
Unlabeled:


Merge 1516
Merge: set-Merge
Stream: ['Tpast', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1517
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1518
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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

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: #506
Continued from Merge 1517

Merge 1519
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1520
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 189
Top

Backtrack (check for another possible derivation: Free Merge): Attempt: #507
Continued from Merge 1516

Merge 1521
Merge: set-Merge
Stream: ['Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1522
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1523
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 via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #508
Continued from Merge 1522

Merge 1524
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1525
Merge: set-Merge
Stream: []
Unlabeled:
Label from
Head:

Label via
shared features:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Label via
movement:

Label from
Head:

Label from
Head:

Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 190
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Backtrack (check for another possible derivation: Free Merge): Attempt: #509
Continued from Merge 1515

Merge 1526
Merge: set-Merge
Stream: ['Psv', 'Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1527
Merge: set-Merge
Stream: ['Tpast', 'C']
Operations: Agree: (Psv,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1528
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,Psv)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1529
Merge: set-Merge
Stream: []
Unlabeled:
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Crash (Unlabeled):

Backtrack (check for another possible derivation: Free Merge): Attempt: #510
Continued from Merge 1528

Merge 1530
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1531
Merge: set-Merge
Stream: []
Unlabeled:
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Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 191
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Backtrack (check for another possible derivation: Free Merge): Attempt: #511
Continued from Merge 1527

Merge 1532
Merge: set-Merge
Stream: ['Tpast', 'C']
FormCopy:
Unlabeled:


Merge 1533
Merge: set-Merge
Stream: ['C']
Operations: Agree: (Tpast,n)
Checked Features: 'uPerson' 'uNumber' 'uGender'
Unlabeled:


Merge 1534
Merge: set-Merge
Stream: []
Unlabeled:
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shared features:

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Crash (No Case):

   ➔

Backtrack (check for another possible derivation: Free Merge): Attempt: #512
Continued from Merge 1533

Merge 1535
Merge: set-Merge
Stream: ['C']
FormCopy:
Unlabeled:


Merge 1536
Merge: set-Merge
Stream: []
Unlabeled:
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shared features:

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movement:

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movement:

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Transfer:
Frontier:

Terminals: C several n fish T(Past,3rd,pl) be -en v believe toT have -en be -en v catch
Externalization
Rules:
several fish T(Past,3rd,pl)+be
several fish were -en+believe
several fish were believed to have -en+be
several fish were believed to have been -en+catch
several fish were believed to have been caught

Successful Derivation 192
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# of Backtracks: 511
# of Crashes: 320
# of Successful Derivations: 192

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