Triple

T11105396
Position Surface form Disambiguated ID Type / Status
Subject San Joaquin Daylight E262613 entity
Predicate operatedOn P2572 FINISHED
Object Southern Pacific Railroad network E47630 NE FINISHED

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: Southern Pacific Railroad network | Statement: [San Joaquin Daylight, operatedOn, Southern Pacific Railroad network]

Disambiguation candidates (1 decision)

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: Southern Pacific Railroad network
Context triple: [San Joaquin Daylight, operatedOn, Southern Pacific Railroad network]
  • A. Southern Pacific Railroad chosen
    Southern Pacific Railroad was a major American railroad company that operated extensive rail networks across the western and southwestern United States from the 19th to the late 20th century.
  • B. Southern Pacific Siskiyou and Shasta routes
    The Southern Pacific Siskiyou and Shasta routes were mountainous mainlines in Oregon and Northern California known for their steep grades, dramatic scenery, and heavy steam locomotive operations.
  • C. Union Pacific West Line
    The Union Pacific West Line is a commuter rail route in the Chicago metropolitan area that runs between downtown Chicago and western suburbs, providing daily passenger service as part of the Metra system.
  • D. Union Pacific Railroad line
    The Union Pacific Railroad line is a major freight rail route in the western United States operated by Union Pacific Railroad, one of the largest railroad networks in North America.
  • E. California Western Railroad
    California Western Railroad is a historic short-line railway in Northern California, best known for its scenic "Skunk Train" excursions through the redwood forests between Willits and Fort Bragg.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (3 batches)

Stage Batch ID Job type Status
creating batch_69d6aa9a40d88190a373e2c7e48285db elicitation completed
NER batch_69d79a2e319881909e66d3c0c73b56bc ner completed
NED1 batch_69e441c3b1788190868fae6919544149 ned_source_triple completed
Created at: April 8, 2026, 9:27 p.m.