Triple
T5774874
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | WMATA 3000-series railcar |
E127414
|
entity |
| Predicate | belongsToFleet |
P66365
|
FINISHED |
| Object | WMATA railcar fleet |
E127414
|
NE FINISHED |
How this triple was built (3 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: WMATA railcar fleet | Statement: [WMATA 3000-series railcar, belongsToFleet, WMATA railcar fleet]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: WMATA railcar fleet Context triple: [WMATA 3000-series railcar, belongsToFleet, WMATA railcar fleet]
-
A.
WMATA 5000-series railcar
The WMATA 5000-series railcar is a generation of Washington Metro rapid transit cars built for improved performance and passenger amenities, used across multiple lines in the system.
-
B.
WMATA 3000-series railcar
chosen
The WMATA 3000-series railcar is a generation of Washington Metro rapid transit vehicles used across multiple lines in the system, featuring stainless-steel construction and updated interiors compared to earlier series.
-
C.
WMATA 6000-series railcar
The WMATA 6000-series railcar is a generation of Washington Metro rapid transit cars featuring modernized interiors, improved safety systems, and updated propulsion technology used across multiple lines in the system.
-
D.
WMATA 7000-series railcar
The WMATA 7000-series railcar is a modern, stainless-steel rapid transit car used by the Washington Metro system, featuring improved safety, digital displays, and updated interiors compared to older fleets.
-
E.
WMATA 2000-series railcar
The WMATA 2000-series railcar is a generation of Washington Metro rapid transit vehicles used across the system’s lines, featuring stainless-steel construction and updated interiors compared to earlier fleets.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: belongsToFleet Context triple: [WMATA 3000-series railcar, belongsToFleet, WMATA railcar fleet]
-
A.
hasSubfleet
Indicates that one fleet entity contains or manages another fleet entity as a subordinate or component fleet.
-
B.
targetFleetType
Indicates the specific category or classification of fleet that is the intended focus or recipient of an action or relationship.
-
C.
supportedFleet
Indicates that one entity provided assistance, resources, or services to sustain or enable the operations of a fleet.
-
D.
shipAssociatedWith
Indicates that there is a relevant connection or involvement between a ship and another entity, such as ownership, operation, registration, or functional association.
-
E.
affiliateOfType
Indicates that an affiliate entity belongs to, or is categorized under, a specific type or classification.
- F. None of above. chosen
Provenance (5 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_69c008361fa88190aefa4dc41b051e7f |
completed | March 22, 2026, 3:18 p.m. |
| NER | Named-entity recognition | batch_69c02acb12c081908e4beee4a957f9f9 |
completed | March 22, 2026, 5:45 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69c09809cfcc8190b4d55db4b74316c7 |
completed | March 23, 2026, 1:31 a.m. |
| PD | Predicate disambiguation | batch_69c021d0c6088190ba670ddcdbf5ca3e |
completed | March 22, 2026, 5:07 p.m. |
| PDg | Predicate description generation | batch_69c02ac9603481909e3fa295d7904a15 |
completed | March 22, 2026, 5:45 p.m. |
Created at: March 22, 2026, 3:50 p.m.