Triple

T4047956
Position Surface form Disambiguated ID Type / Status
Subject Transbay Tube E84112 entity
Predicate isCriticalInfrastructureFor P7519 FINISHED
Object Transbay BART service
Transbay BART service is the Bay Area Rapid Transit rail operation that carries passengers between San Francisco and the East Bay across San Francisco Bay.
E12820 NE FINISHED

How this triple was built (4 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: Transbay BART service | Statement: [Transbay Tube, isCriticalInfrastructureFor, Transbay BART service]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Transbay BART service
Context triple: [Transbay Tube, isCriticalInfrastructureFor, Transbay BART service]
  • A. BART
    BART (Bay Area Rapid Transit) is a major rapid transit system serving the San Francisco Bay Area, linking cities like San Francisco, Oakland, and Berkeley with surrounding suburbs and regional transit networks.
  • B. BART Antioch–SFO+Millbrae line
    The BART Antioch–SFO+Millbrae line is a Bay Area Rapid Transit service that runs between Antioch in the East Bay and San Francisco International Airport and Millbrae, connecting suburban communities with major regional transit hubs.
  • C. BART Green Line
    The BART Green Line is a Bay Area Rapid Transit service route that operates trains through the South Bay, including stops such as Berryessa/North San José station.
  • D. BART Orange Line
    The BART Orange Line is a Bay Area Rapid Transit service route that runs through the East Bay and South Bay, connecting cities such as Richmond, Oakland, and San José.
  • E. BART Transbay Zone 1
    BART Transbay Zone 1 is a core fare zone in the Bay Area Rapid Transit system that covers central transbay stations in the San Francisco financial district and nearby areas.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Transbay BART service
Triple: [Transbay Tube, isCriticalInfrastructureFor, Transbay BART service]
Generated description
Transbay BART service is the Bay Area Rapid Transit rail operation that carries passengers between San Francisco and the East Bay across San Francisco Bay.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Transbay BART service
Target entity description: Transbay BART service is the Bay Area Rapid Transit rail operation that carries passengers between San Francisco and the East Bay across San Francisco Bay.
  • A. BART chosen
    BART (Bay Area Rapid Transit) is a major rapid transit system serving the San Francisco Bay Area, linking cities like San Francisco, Oakland, and Berkeley with surrounding suburbs and regional transit networks.
  • B. BART Antioch–SFO+Millbrae line
    The BART Antioch–SFO+Millbrae line is a Bay Area Rapid Transit service that runs between Antioch in the East Bay and San Francisco International Airport and Millbrae, connecting suburban communities with major regional transit hubs.
  • C. BART Green Line
    The BART Green Line is a Bay Area Rapid Transit service route that operates trains through the South Bay, including stops such as Berryessa/North San José station.
  • D. BART Orange Line
    The BART Orange Line is a Bay Area Rapid Transit service route that runs through the East Bay and South Bay, connecting cities such as Richmond, Oakland, and San José.
  • E. BART Transbay Zone 1
    BART Transbay Zone 1 is a core fare zone in the Bay Area Rapid Transit system that covers central transbay stations in the San Francisco financial district and nearby areas.
  • F. None of above.

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_69aed930bd5c819083e7dcc14fc44f69 completed March 9, 2026, 2:29 p.m.
NER Named-entity recognition batch_69aefb81040481909b22e4c445ecae0f completed March 9, 2026, 4:55 p.m.
NED1 Entity disambiguation (via context triple) batch_69b5565466648190802a9b8fd88c3572 completed March 14, 2026, 12:36 p.m.
NEDg Description generation batch_69b556cdd05081909fea1fb0a58bc7d1 completed March 14, 2026, 12:38 p.m.
NED2 Entity disambiguation (via description) batch_69b557d445d081908f48fe3bd06f786e completed March 14, 2026, 12:43 p.m.
Created at: March 9, 2026, 3:37 p.m.