Triple
T7500704
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA Commuter Rail (Old Colony Lines at JFK/UMass) |
E177251
|
entity |
| Predicate | line |
P1293
|
FINISHED |
| Object | Greenbush Line |
E175422
|
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: Greenbush Line | Statement: [MBTA Commuter Rail (Old Colony Lines at JFK/UMass), line, Greenbush Line]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Greenbush Line Context triple: [MBTA Commuter Rail (Old Colony Lines at JFK/UMass), line, Greenbush Line]
-
A.
Greenbush Line
chosen
The Greenbush Line is a Massachusetts Bay Transportation Authority commuter rail route serving Boston’s South Station and several South Shore communities.
-
B.
Mernda line
The Mernda line is a suburban railway line in Melbourne, Australia, running from the central business district to the northeastern suburb of Mernda as part of the city’s metropolitan train network.
-
C.
Pakenham line
The Pakenham line is a suburban railway line in Melbourne, Australia, running from the central business district to the southeastern suburb of Pakenham as part of the city’s metropolitan train network.
-
D.
Stockinbingal–Parkes railway line
The Stockinbingal–Parkes railway line is a regional rail route in New South Wales, Australia, forming part of the freight and transport network that links inland agricultural areas with major rail corridors.
-
E.
Bendigo line
The Bendigo line is a regional railway corridor in Victoria, Australia, running between Melbourne and the city of Bendigo and serving numerous intermediate towns.
- 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_69c69f2696688190915a8458f2398211 |
completed | March 27, 2026, 3:15 p.m. |
| NER | Named-entity recognition | batch_69c6f59aabb8819085bdbe9c793d5b8b |
completed | March 27, 2026, 9:24 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c9953aff988190a3224050e5706589 |
completed | March 29, 2026, 9:10 p.m. |
Created at: March 27, 2026, 3:44 p.m.