Triple
T781540
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Green Line D branch |
E16506
|
entity |
| Predicate | previousEasternTerminus |
P3569
|
FINISHED |
| Object | Lechmere station |
E92544
|
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: Lechmere station | Statement: [MBTA Green Line D branch, previousEasternTerminus, Lechmere station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Lechmere station Context triple: [MBTA Green Line D branch, previousEasternTerminus, Lechmere station]
-
A.
Lechmere station
chosen
Lechmere station is a Massachusetts Bay Transportation Authority (MBTA) Green Line light rail station serving the East Cambridge neighborhood of Cambridge, Massachusetts.
-
B.
Lawrence station
Lawrence station is a commuter rail stop in Lawrence, Massachusetts, served by the MBTA on its Haverhill Line.
-
C.
Lawrence station
Lawrence station is a Toronto Transit Commission subway station on Line 1 Yonge–University, serving the Lawrence Avenue and Yonge Street area in midtown Toronto.
-
D.
Kipling station
Kipling station is a major western transit hub in Toronto that connects the subway system with regional buses and commuter services.
-
E.
Deanwood station
Deanwood station is an elevated Washington Metro station in Northeast Washington, D.C., serving the Deanwood neighborhood on the system’s Orange Line.
- 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_69a4936ad1fc81908f190208059ccf78 |
completed | March 1, 2026, 7:28 p.m. |
| NER | Named-entity recognition | batch_69a4aa9cecd08190a23c9f65080a4ac7 |
completed | March 1, 2026, 9:07 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ac3b978de4819083b117ee3a6cb8c1 |
completed | March 7, 2026, 2:52 p.m. |
Created at: March 1, 2026, 7:37 p.m.