Triple
T21753751
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Somerville Community Path |
E536980
|
entity |
| Predicate | adjacentTo |
P224
|
FINISHED |
| Object | MBTA Green Line Extension corridor (in eastern segments) |
—
|
NE NERFINISHED |
How this triple was built (3 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 Extension corridor (in eastern segments) | Statement: [Somerville Community Path, adjacentTo, MBTA Green Line Extension corridor (in eastern segments)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Green Line Extension corridor (in eastern segments) Context triple: [Somerville Community Path, adjacentTo, MBTA Green Line Extension corridor (in eastern segments)]
-
A.
MBTA Green Line main line
The MBTA Green Line main line is the core light rail trunk of Boston’s Green Line system, running through central Boston and connecting multiple branches that serve surrounding neighborhoods and suburbs.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
MBTA Green Line D branch
The MBTA Green Line D branch is a light rail line in the Boston metropolitan area that runs between downtown Boston and several western suburbs, including Newton and Riverside.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: MBTA Green Line Extension corridor (in eastern segments) Target entity description: The MBTA Green Line Extension corridor (in eastern segments) is a recently constructed light-rail transit route in Somerville and Medford, Massachusetts, extending Boston’s Green Line service into previously underserved neighborhoods.
-
A.
MBTA Green Line main line
The MBTA Green Line main line is the core light rail trunk of Boston’s Green Line system, running through central Boston and connecting multiple branches that serve surrounding neighborhoods and suburbs.
-
B.
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.
-
C.
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.
-
D.
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.
-
E.
MBTA Green Line D branch
The MBTA Green Line D branch is a light rail line in the Boston metropolitan area that runs between downtown Boston and several western suburbs, including Newton and Riverside.
- F. None of above. chosen
Provenance (2 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_69e0c46eab808190b848242d63a17c47 |
completed | April 16, 2026, 11:13 a.m. |
| NER | Named-entity recognition | batch_69f01d8c57508190b45fb974ef0ded10 |
completed | April 28, 2026, 2:38 a.m. |
Created at: April 16, 2026, 6:50 p.m.