Triple
T1620097
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA bus route 57 |
E35009
|
entity |
| Predicate | servesLandmark |
P7126
|
FINISHED |
| Object | Watertown Yard bus facility |
E34563
|
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: Watertown Yard bus facility | Statement: [MBTA bus route 57, servesLandmark, Watertown Yard bus facility]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Watertown Yard bus facility Context triple: [MBTA bus route 57, servesLandmark, Watertown Yard bus facility]
-
A.
Watertown Square
chosen
Watertown Square is a major transit and commercial hub in Watertown, Massachusetts, functioning as a key connection point for multiple MBTA bus routes and local activity.
-
B.
Ashmont station
Ashmont station is a major MBTA transit hub in Boston’s Dorchester neighborhood, serving as the southern terminus of the Red Line’s Ashmont branch and the connection point to the Mattapan trolley line.
-
C.
Alewife MBTA station
Alewife MBTA station is a major transit hub in Cambridge, Massachusetts, serving as the northern terminus of the Red Line and a key connection point for buses, park-and-ride commuters, and regional bike paths.
-
D.
MBTA Waverley
MBTA Waverley is a commuter rail station in Belmont, Massachusetts, served by the Massachusetts Bay Transportation Authority’s Fitchburg Line.
-
E.
Darby Transportation Center
Darby Transportation Center is a public transit hub in Darby, Pennsylvania, serving as a key interchange point for SEPTA trolley and bus services.
- 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_69a886023194819080a3fccd6e325d0e |
completed | March 4, 2026, 7:20 p.m. |
| NER | Named-entity recognition | batch_69a909b0738c8190b073e0ccec5e217d |
completed | March 5, 2026, 4:42 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ad51d2cbb481908bc74cecdc023547 |
completed | March 8, 2026, 10:39 a.m. |
Created at: March 4, 2026, 7:28 p.m.