Triple
T6050682
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Medford/Tufts Branch |
E134783
|
entity |
| Predicate | category |
P87
|
FINISHED |
| Object | MBTA Green Line branches |
E25076
|
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 Green Line branches | Statement: [Medford/Tufts Branch, category, MBTA Green Line branches]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Green Line branches Context triple: [Medford/Tufts Branch, category, MBTA Green Line branches]
-
A.
MBTA Green Line
chosen
The MBTA Green Line is a light rail service in Boston, Massachusetts, known as one of the oldest subway lines in the United States and serving key neighborhoods, universities, and cultural destinations across the city.
-
B.
MBTA Green Line B branch
The MBTA Green Line B branch is a light rail service in Boston that runs along Commonwealth Avenue, primarily serving Boston University and the Allston–Brighton neighborhoods.
-
C.
MBTA Green Line E branch
The MBTA Green Line E branch is a light rail line in Boston that runs from downtown through the Back Bay and Longwood Medical Area to Heath Street, serving major hospitals, universities, and residential neighborhoods.
-
D.
MBTA Green Line A branch
The MBTA Green Line A branch was a former light rail line in Boston and its western suburbs that once ran between downtown and Watertown before being replaced by bus service.
-
E.
MBTA Green Line C branch
The MBTA Green Line C branch is a light rail service in Boston and Brookline that runs primarily along Beacon Street, connecting Cleveland Circle to downtown Boston.
- 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_69c00877b6d4819096b0e163728b73a3 |
completed | March 22, 2026, 3:19 p.m. |
| NER | Named-entity recognition | batch_69c056f66cb08190a782cdd038f26b93 |
completed | March 22, 2026, 8:54 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c113a911548190b4269d094f65308d |
completed | March 23, 2026, 10:19 a.m. |
Created at: March 22, 2026, 4:09 p.m.