Triple

T664071
Position Surface form Disambiguated ID Type / Status
Subject BART E12820 entity
Predicate owner P347 FINISHED
Object San Francisco Bay Area Rapid Transit District E87163 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: San Francisco Bay Area Rapid Transit District | Statement: [BART, owner, San Francisco Bay Area Rapid Transit District]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: San Francisco Bay Area Rapid Transit District
Context triple: [BART, owner, San Francisco Bay Area Rapid Transit District]
  • A. San Francisco Bay Area Rapid Transit District chosen
    The San Francisco Bay Area Rapid Transit District is the public agency that plans, funds, and oversees the Bay Area’s regional BART rail transit system.
  • B. Santa Clara Valley Transportation Authority
    The Santa Clara Valley Transportation Authority is the public transit agency that operates bus, light rail, and related transportation services throughout Santa Clara County in California’s Silicon Valley.
  • C. San Francisco County Transportation Authority
    The San Francisco County Transportation Authority is the county’s transportation planning and funding agency, responsible for developing and overseeing major transit, roadway, and mobility projects in San Francisco.
  • D. San Francisco Muni
    San Francisco Muni is the primary public transportation system in San Francisco, operating the city’s network of buses, light rail, historic streetcars, and cable cars.
  • E. AC Transit
    AC Transit is a public bus agency serving the East Bay region of the San Francisco Bay Area, providing local and transbay bus services.
  • 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_69a493355dec819098d4244b2fa34885 completed March 1, 2026, 7:27 p.m.
NER Named-entity recognition batch_69a49fd1f0ec819087003d30bbab2fa6 completed March 1, 2026, 8:21 p.m.
NED1 Entity disambiguation (via context triple) batch_69a64a4f8f0081909686a76b4fddda60 completed March 3, 2026, 2:41 a.m.
Created at: March 1, 2026, 7:36 p.m.