Triple
T20109884
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Lincoln station (MBTA) |
E490298
|
entity |
| Predicate | servedBy |
P82
|
FINISHED |
| Object | MBTA Commuter Rail Fitchburg Line trains |
—
|
NE NERFINISHED |
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 trains | Statement: [Lincoln station (MBTA), servedBy, MBTA Commuter Rail Fitchburg Line trains]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: MBTA Commuter Rail Fitchburg Line trains Context triple: [Lincoln station (MBTA), servedBy, MBTA Commuter Rail Fitchburg Line trains]
-
A.
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.
-
B.
MBTA Commuter Rail Newburyport/Rockport Line
The MBTA Commuter Rail Newburyport/Rockport Line is a Massachusetts Bay Transportation Authority rail service running from Boston’s North Station through Boston’s North Shore communities to the coastal termini of Newburyport and Rockport.
-
C.
MBTA Commuter Rail Franklin Line
The MBTA Commuter Rail Franklin Line is a regional rail line in the Greater Boston area that provides passenger service between Boston and communities to the southwest, including Franklin.
-
D.
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.
-
E.
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.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
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_69da62636cc08190982cc71733a17b8d |
completed | April 11, 2026, 3:01 p.m. |
| NER | Named-entity recognition | batch_69e666df1b148190a28ead2f7cce7aab |
completed | April 20, 2026, 5:48 p.m. |
Created at: April 11, 2026, 11:28 p.m.