Triple
T38390806
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Grafton station |
E899710
|
entity |
| Predicate | railOwnerOrMaintainer |
P70928
|
FINISHED |
| Object | MBTA or contracted operator |
—
|
LITERAL 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 or contracted operator | Statement: [Grafton station, railOwnerOrMaintainer, MBTA or contracted operator]
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: railOwnerOrMaintainer Context triple: [Grafton station, railOwnerOrMaintainer, MBTA or contracted operator]
-
A.
railwayOwner
Indicates that one entity owns, controls, or holds proprietary rights over a railway or railway system used by another entity.
-
B.
hasRailTransportOperator
Indicates that a rail transport system, service, or infrastructure is operated or managed by a specified rail transport operator.
-
C.
railwayControlledBy
Indicates that the operation, management, or authority over a railway is exercised by a specified controlling entity.
-
D.
railwayCarriageOwner
Indicates that one entity is the owner or legal possessor of a particular railway carriage.
-
E.
railwayInfrastructureManager
chosen
Indicates that one entity is responsible for managing, maintaining, and operating the railway infrastructure used by another entity.
- F. None of above.
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_69f76e5c9b808190b486523f5c2f817d |
completed | May 3, 2026, 3:48 p.m. |
| NER | Named-entity recognition | batch_69fcd1499e2c81909bafd84dc4810f45 |
completed | May 7, 2026, 5:52 p.m. |
| PD | Predicate disambiguation | batch_69fcccf024ec819086383ffbb6cfc036 |
completed | May 7, 2026, 5:33 p.m. |
Created at: May 3, 2026, 4:31 p.m.