Triple

T17716876
Position Surface form Disambiguated ID Type / Status
Subject North Concord/Martinez station E442221 entity
Predicate isPartOfCorridor P35 FINISHED
Object Antioch–San Francisco/Millbrae corridor — NE NERFINISHED

Named-entity recognition

Before disambiguation, gpt-5-mini classified whether the object phrase is a named entity — the step behind the object's NE type shown above.

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: Antioch–San Francisco/Millbrae corridor | Statement: [North Concord/Martinez station, isPartOfCorridor, Antioch–San Francisco/Millbrae corridor]

Disambiguation candidates (2 decisions)

The exact options the model was shown at each disambiguation step, with the option it chose highlighted — the evidence behind this triple's disambiguated ids.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Antioch–San Francisco/Millbrae corridor
Context triple: [North Concord/Martinez station, isPartOfCorridor, Antioch–San Francisco/Millbrae corridor]
  • A. South Bay–East Bay commute corridor
    The South Bay–East Bay commute corridor is a major regional travel route in the San Francisco Bay Area connecting residential and employment centers between the South Bay and East Bay.
  • B. East Bay BART corridor
    The East Bay BART corridor is a major rapid transit route running through the eastern side of the San Francisco Bay Area, connecting multiple cities via Bay Area Rapid Transit.
  • C. South San Francisco–East Bay route
    The South San Francisco–East Bay route is a San Francisco Bay Ferry commuter and transit service connecting South San Francisco with cities on the East Bay shoreline across the San Francisco Bay.
  • D. Vallejo–San Francisco route
    The Vallejo–San Francisco route is a commuter and leisure passenger ferry service across San Pablo Bay linking the city of Vallejo with San Francisco.
  • E. San Francisco–San Jose corridor
    The San Francisco–San Jose corridor is a heavily urbanized and economically vital stretch of the San Francisco Peninsula that links the two major Bay Area cities and encompasses much of Silicon Valley.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Antioch–San Francisco/Millbrae corridor
Target entity description: The Antioch–San Francisco/Millbrae corridor is a Bay Area Rapid Transit (BART) service corridor linking eastern Contra Costa County with San Francisco and the Peninsula, including Millbrae.
  • A. South Bay–East Bay commute corridor
    The South Bay–East Bay commute corridor is a major regional travel route in the San Francisco Bay Area connecting residential and employment centers between the South Bay and East Bay.
  • B. East Bay BART corridor chosen
    The East Bay BART corridor is a major rapid transit route running through the eastern side of the San Francisco Bay Area, connecting multiple cities via Bay Area Rapid Transit.
  • C. South San Francisco–East Bay route
    The South San Francisco–East Bay route is a San Francisco Bay Ferry commuter and transit service connecting South San Francisco with cities on the East Bay shoreline across the San Francisco Bay.
  • D. Vallejo–San Francisco route
    The Vallejo–San Francisco route is a commuter and leisure passenger ferry service across San Pablo Bay linking the city of Vallejo with San Francisco.
  • E. San Francisco–San Jose corridor
    The San Francisco–San Jose corridor is a heavily urbanized and economically vital stretch of the San Francisco Peninsula that links the two major Bay Area cities and encompasses much of Silicon Valley.
  • F. None of above.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69d8b9ec79688190b86bdcef85a7b3aa elicitation completed
NER batch_69e47481663c8190a1110385e5596ab0 ner completed
Created at: April 10, 2026, 10:06 a.m.