Triple

T17423433
Position Surface form Disambiguated ID Type / Status
Subject Union Pacific Railroad Oakland Subdivision E423674 entity
Predicate partOfCorridor P840 FINISHED
Object East Bay–Central Valley rail corridor NE NERFINISHED

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: East Bay–Central Valley rail corridor | Statement: [Union Pacific Railroad Oakland Subdivision, partOfCorridor, East Bay–Central Valley rail corridor]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: East Bay–Central Valley rail corridor
Context triple: [Union Pacific Railroad Oakland Subdivision, partOfCorridor, East Bay–Central Valley rail corridor]
  • A. San Francisco–San Jose rail corridor
    The San Francisco–San Jose rail corridor is a major commuter and intercity rail line on the San Francisco Peninsula that connects San Francisco and San Jose, primarily served by Caltrain.
  • 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. Los Angeles–Seattle rail corridor
    The Los Angeles–Seattle rail corridor is a major long-distance passenger rail route in the western United States, connecting Southern California with the Pacific Northwest along the coast.
  • D. San Joaquins route
    The San Joaquins route is an Amtrak passenger rail service in California that connects the San Francisco Bay Area and Sacramento with the Central Valley and Bakersfield.
  • E. Altamont Corridor Express
    Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the San Francisco Bay Area.
  • 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: East Bay–Central Valley rail corridor
Target entity description: The East Bay–Central Valley rail corridor is a major freight and passenger rail route linking California’s San Francisco Bay Area with the Central Valley through the East Bay.
  • A. San Francisco–San Jose rail corridor
    The San Francisco–San Jose rail corridor is a major commuter and intercity rail line on the San Francisco Peninsula that connects San Francisco and San Jose, primarily served by Caltrain.
  • 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. Los Angeles–Seattle rail corridor
    The Los Angeles–Seattle rail corridor is a major long-distance passenger rail route in the western United States, connecting Southern California with the Pacific Northwest along the coast.
  • D. San Joaquins route
    The San Joaquins route is an Amtrak passenger rail service in California that connects the San Francisco Bay Area and Sacramento with the Central Valley and Bakersfield.
  • E. Altamont Corridor Express
    Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the San Francisco Bay Area.
  • F. None of above. chosen

Provenance (2 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_69d889d88b6081908bada047f5b3ba51 completed April 10, 2026, 5:25 a.m.
NER Named-entity recognition batch_69e44238b418819095c6a013d3ff3b17 completed April 19, 2026, 2:47 a.m.
Created at: April 10, 2026, 5:46 a.m.