Triple
T4178930
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | MBTA diesel locomotives |
E86545
|
entity |
| Predicate | maintainedBy |
P86
|
FINISHED |
| Object | Keolis Commuter Services |
E27063
|
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: Keolis Commuter Services | Statement: [MBTA diesel locomotives, maintainedBy, Keolis Commuter Services]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Keolis Commuter Services Context triple: [MBTA diesel locomotives, maintainedBy, Keolis Commuter Services]
-
A.
KeolisAmey Metrolink
KeolisAmey Metrolink is the private operator responsible for running and maintaining Greater Manchester’s Metrolink light rail network in England.
-
B.
Keolis
chosen
Keolis is a major French public transport operator that manages and operates bus, tram, metro, and rail networks in numerous cities worldwide.
-
C.
First Transit
First Transit is a North American public transportation management and contracting company that operates and maintains bus, paratransit, shuttle, and other transit services for municipalities and organizations.
-
D.
BC Rapid Transit Company
BC Rapid Transit Company is the public agency responsible for operating and managing metro and light rail transit services in the Metro Vancouver region of British Columbia, Canada.
-
E.
Go-Ahead Group
Go-Ahead Group is a major British public transport operator that runs bus and rail services in the UK and internationally.
- 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_69aed93de98c8190ad838ce507b77c8a |
completed | March 9, 2026, 2:29 p.m. |
| NER | Named-entity recognition | batch_69af030114c88190b725908a32ace750 |
completed | March 9, 2026, 5:27 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b589f5864881909c9fc787dd9b2341 |
completed | March 14, 2026, 4:16 p.m. |
Created at: March 9, 2026, 3:45 p.m.