Triple

T22722083
Position Surface form Disambiguated ID Type / Status
Subject Firefly (St. Louis–San Francisco Railway train) E561887 entity
Predicate railroad P18201 FINISHED
Object St. Louis–San Francisco Railway — 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: St. Louis–San Francisco Railway | Statement: [Firefly (St. Louis–San Francisco Railway train), railroad, St. Louis–San Francisco Railway]

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: St. Louis–San Francisco Railway
Context triple: [Firefly (St. Louis–San Francisco Railway train), railroad, St. Louis–San Francisco Railway]
  • A. St. Louis–San Francisco Railway chosen
    The St. Louis–San Francisco Railway, commonly known as the Frisco, was a major American railroad that operated in the central and south-central United States from the late 19th to the mid-20th century.
  • B. Missouri Pacific Railroad
    Missouri Pacific Railroad was a major American Class I railroad that operated across the Midwestern and Southwestern United States, playing a key role in regional freight and passenger transportation before its merger into the Union Pacific system.
  • C. St. Louis Southwestern Railway
    St. Louis Southwestern Railway, commonly known as the Cotton Belt, was a regional U.S. railroad that primarily served the south-central states and later became part of the Southern Pacific system.
  • D. Missouri–Kansas–Texas Railroad
    The Missouri–Kansas–Texas Railroad, commonly known as the MKT or "the Katy," was a major American railroad that served the south-central United States, particularly linking Missouri, Kansas, Oklahoma, and Texas.
  • E. St. Louis, Brownsville and Mexico Railway
    The St. Louis, Brownsville and Mexico Railway was an early 20th-century railroad that helped open and develop South Texas and the Rio Grande Valley by connecting the region to national rail networks.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.

Provenance (2 batches)

Stage Batch ID Job type Status
creating batch_69e2454fc984819088213b58ee87a002 elicitation completed
NER batch_69f17926ae0c8190af8493cab6b15261 ner completed
Created at: April 17, 2026, 3:20 p.m.