Triple
T2965409
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Town of Littleton, Massachusetts |
E80148
|
entity |
| Predicate | servedBy |
P82
|
FINISHED |
| Object | MBTA Commuter Rail Fitchburg Line |
E65
|
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 Commuter Rail Fitchburg Line | Statement: [Town of Littleton, Massachusetts, servedBy, MBTA Commuter Rail Fitchburg Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail Fitchburg Line Context triple: [Town of Littleton, Massachusetts, servedBy, MBTA Commuter Rail Fitchburg Line]
-
A.
MBTA Fitchburg Line
chosen
The MBTA Fitchburg Line is a commuter rail route in the Greater Boston area that runs between Boston and Fitchburg, serving numerous suburban communities along the way.
-
B.
MBTA Framingham/Worcester Line
The MBTA Framingham/Worcester Line is a Massachusetts Bay Transportation Authority commuter rail route running between Boston and Worcester, serving numerous communities in the western suburbs.
-
C.
MBTA Commuter Rail Greenbush Line
The MBTA Commuter Rail Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route connecting Boston’s South Station with coastal South Shore communities, including towns such as Hingham, Cohasset, and Scituate.
-
D.
MBTA Commuter Rail Old Colony Lines
The MBTA Commuter Rail Old Colony Lines are a set of commuter rail routes in eastern Massachusetts that provide service between Boston and communities along the historic Old Colony Railroad corridors, including the South Shore and parts of southeastern Massachusetts.
-
E.
MBTA Commuter Rail Lowell Line
The MBTA Commuter Rail Lowell Line is a regional rail service in Greater Boston that connects Boston’s North Station with the city of Lowell and intermediate communities in northeastern Massachusetts.
- 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_69ad8b1341848190bd19dbf46892887d |
completed | March 8, 2026, 2:43 p.m. |
| NER | Named-entity recognition | batch_69ad995a28e88190a4d6b9ef2c0d8e61 |
completed | March 8, 2026, 3:44 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b108e14e288190bcca59b2d8132996 |
completed | March 11, 2026, 6:17 a.m. |
Created at: March 8, 2026, 2:58 p.m.