Triple

T18919847
Position Surface form Disambiguated ID Type / Status
Subject 43rd station (Green Line) E462819 entity
Predicate transitAuthority P14467 FINISHED
Object Chicago Transit Authority — 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: Chicago Transit Authority | Statement: [43rd station (Green Line), transitAuthority, Chicago Transit Authority]

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: Chicago Transit Authority
Context triple: [43rd station (Green Line), transitAuthority, Chicago Transit Authority]
  • A. Chicago Transit Authority chosen
    The Chicago Transit Authority is the primary public transportation agency serving Chicago and several surrounding suburbs, operating the city’s extensive network of buses and rapid transit trains.
  • B. London Transit Commission
    The London Transit Commission is the public transportation agency responsible for operating bus services throughout the city of London, Ontario.
  • C. Chicago Surface Lines
    Chicago Surface Lines was a privately operated streetcar and bus system that provided most of Chicago’s surface public transportation in the first half of the 20th century.
  • D. Chicago Rapid Transit Company
    The Chicago Rapid Transit Company was the private operator of Chicago’s elevated “L” rail system in the early 20th century before public transit was consolidated under the Chicago Transit Authority.
  • E. St. Charles Area Transit system
    The St. Charles Area Transit system is the public bus network serving residents and visitors in St. Charles, Missouri.
  • 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_69d8dcfdbbb881909964fa5a75bd0b48 elicitation completed
NER batch_69e5c62a264c81909f6d5df841486efc ner completed
Created at: April 10, 2026, 11:59 a.m.