Triple
T16029428
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Green Line Extension |
E388804
|
entity |
| Predicate | usesRightOfWay |
P13660
|
FINISHED |
| Object | MBTA Lowell Line corridor |
E471999
|
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 Lowell Line corridor | Statement: [Green Line Extension, usesRightOfWay, MBTA Lowell Line corridor]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Lowell Line corridor Context triple: [Green Line Extension, usesRightOfWay, MBTA Lowell Line corridor]
-
A.
MBTA Franklin Branch
The MBTA Franklin Branch is a commuter rail corridor in Massachusetts that carries Franklin Line trains between Boston and the southwestern suburbs.
-
B.
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.
-
C.
MBTA Lowell Line
chosen
The MBTA Lowell Line is a commuter rail service operated by the Massachusetts Bay Transportation Authority that runs between Boston’s North Station and Lowell, serving several communities in northern Massachusetts.
-
D.
MBTA Ashmont Branch
The MBTA Ashmont Branch is a rapid transit line of Boston’s Red Line that runs from JFK/UMass station through Dorchester to Ashmont, serving several southern neighborhoods of the city.
-
E.
MBTA Fairmount Line
The MBTA Fairmount Line is a commuter rail service in Boston, Massachusetts, connecting several neighborhoods in the city’s southern corridor to downtown.
- 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_69d86dada3808190825d5f80d72fbe88 |
completed | April 10, 2026, 3:25 a.m. |
| NER | Named-entity recognition | batch_69e1832a56ec8190a47fd2cf83a42fd4 |
completed | April 17, 2026, 12:47 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69ffeb867ae88190945af88247d4c80b |
completed | May 10, 2026, 2:20 a.m. |
Created at: April 10, 2026, 4:56 a.m.