Triple
T9903763
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Watertown branch of the Green Line A |
E182351
|
entity |
| Predicate | successor |
P78
|
FINISHED |
| Object | MBTA bus route 71 (partial corridor replacement) |
E184849
|
NE FINISHED |
How this triple was built (2 steps)
Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.
NER
Named-entity recognition
gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: MBTA bus route 71 (partial corridor replacement) | Statement: [Watertown branch of the Green Line A, successor, MBTA bus route 71 (partial corridor replacement)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA bus route 71 (partial corridor replacement) Context triple: [Watertown branch of the Green Line A, successor, MBTA bus route 71 (partial corridor replacement)]
-
A.
MBTA bus route 71
chosen
MBTA bus route 71 is a Massachusetts Bay Transportation Authority bus line that primarily operates between Harvard Square in Cambridge and Watertown, serving neighborhoods along Mount Auburn Street.
-
B.
MBTA bus route 70
MBTA bus route 70 is a Massachusetts Bay Transportation Authority bus line that runs between Cambridge and Waltham, serving several communities along the Charles River corridor.
-
C.
MBTA bus route 73
MBTA bus route 73 is a Massachusetts Bay Transportation Authority bus line serving the corridor between Harvard Square in Cambridge and Waverley Square in Belmont.
-
D.
MBTA bus route 57
MBTA bus route 57 is a key Boston-area bus line that connects downtown Boston with Allston, Brighton, and Watertown, serving as a major transit corridor along Commonwealth Avenue and beyond.
-
E.
MBTA bus route 1
MBTA bus route 1 is a heavily used Boston-area bus line that runs between Harvard Square in Cambridge and Dudley/Nubian Square in Roxbury, serving major corridors like Massachusetts Avenue.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 batches)
The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.
| Step | Stage | Batch ID | Status | When |
|---|---|---|---|---|
| creating | Elicitation | batch_69ca82876f8081909cf75df0f99bb13f |
completed | March 30, 2026, 2:02 p.m. |
| NER | Named-entity recognition | batch_69cdb4e4f92c81908e38509416f19c78 |
completed | April 2, 2026, 12:14 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69d1eb2778bc81909d7e09da718d9afa |
completed | April 5, 2026, 4:55 a.m. |
Created at: March 30, 2026, 8:40 p.m.