Triple

T6431062
Position Surface form Disambiguated ID Type / Status
Subject WMATA 5000-series railcar E129777 entity
Predicate belongsToSeries P4276 FINISHED
Object WMATA railcar series E129777 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: WMATA railcar series | Statement: [WMATA 5000-series railcar, belongsToSeries, WMATA railcar series]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: WMATA railcar series
Context triple: [WMATA 5000-series railcar, belongsToSeries, WMATA railcar series]
  • A. WMATA 1000-series railcar
    The WMATA 1000-series railcar was the original generation of Metrorail subway cars in Washington, D.C., known for its early service on the system and later concerns over crashworthiness that led to its retirement.
  • B. WMATA 5000-series railcar chosen
    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.
  • C. WMATA 3000-series railcar
    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.
  • D. 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.
  • E. WMATA 4000-series railcar
    The WMATA 4000-series railcar was an older generation of Washington Metro rolling stock that served the D.C. region’s subway system before being phased out in favor of newer models.
  • 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_69c0084caac48190a7bc2ad8ba44536f completed March 22, 2026, 3:18 p.m.
NER Named-entity recognition batch_69c0693b872c819082a7d0e257018831 completed March 22, 2026, 10:12 p.m.
NED1 Entity disambiguation (via context triple) batch_69c6637d35888190bbe9802229e55df1 completed March 27, 2026, 11:01 a.m.
Created at: March 22, 2026, 4:44 p.m.