Triple

T22722012
Position Surface form Disambiguated ID Type / Status
Subject Meteor (Frisco train) E561886 entity
Predicate railwayLineUsed P848 FINISHED
Object St. Louis–San Francisco Railway main line — 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 main line | Statement: [Meteor (Frisco train), railwayLineUsed, St. Louis–San Francisco Railway main line]

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 main line
Context triple: [Meteor (Frisco train), railwayLineUsed, St. Louis–San Francisco Railway main line]
  • 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. Kansas City Southern Railway line
    The Kansas City Southern Railway line is a major freight rail route in the central and southern United States operated by the Kansas City Southern Railway, connecting key regional hubs and supporting significant commercial transport.
  • C. Burlington Northern Santa Fe Railway main line
    The Burlington Northern Santa Fe Railway main line is a major transcontinental freight rail corridor in the United States that carries heavy rail traffic across key western routes, including the desert region near Needles, California.
  • 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. Colorado Central Railroad
    The Colorado Central Railroad was a 19th-century narrow-gauge railroad in Colorado that played a key role in serving the region’s mining communities and connecting mountain towns to larger 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.