Triple

T18133061
Position Surface form Disambiguated ID Type / Status
Subject Union Pacific Railroad Fresno Subdivision E434062 entity
Predicate hasService P182 FINISHED
Object Altamont Corridor Express commuter rail — NE NERFINISHED

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: Altamont Corridor Express commuter rail | Statement: [Union Pacific Railroad Fresno Subdivision, hasService, Altamont Corridor Express commuter rail]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Altamont Corridor Express commuter rail
Context triple: [Union Pacific Railroad Fresno Subdivision, hasService, Altamont Corridor Express commuter rail]
  • A. Altamont Corridor Express chosen
    Altamont Corridor Express is a commuter rail service in Northern California that connects Central Valley communities with the San Francisco Bay Area.
  • B. 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.
  • C. Sonoma–Marin Area Rail Transit
    Sonoma–Marin Area Rail Transit is a commuter rail system in California’s North Bay that provides passenger service along the Highway 101 corridor in Sonoma and Marin counties.
  • D. 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.
  • E. Caltrain
    Caltrain is a commuter rail service on the San Francisco Peninsula and in the Santa Clara Valley, connecting San Francisco to San Jose and Gilroy in California.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

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_69d8b909e8cc81908df4cc2b8ea6d11f completed April 10, 2026, 8:47 a.m.
NER Named-entity recognition batch_69e4de04321c81909c0b9d47757720fd completed April 19, 2026, 1:52 p.m.
Created at: April 10, 2026, 10:29 a.m.