Triple

T17725838
Position Surface form Disambiguated ID Type / Status
Subject Chicago Transit Authority Green Line stations E442458 entity
Predicate hasStation P35 FINISHED
Object Oak Park station (CTA Green Line) — NE NERFINISHED

How this triple was built (3 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: Oak Park station (CTA Green Line) | Statement: [Chicago Transit Authority Green Line stations, hasStation, Oak Park station (CTA Green Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Oak Park station (CTA Green Line)
Context triple: [Chicago Transit Authority Green Line stations, hasStation, Oak Park station (CTA Green Line)]
  • A. Oak Park station (Blue Line)
    Oak Park station (Blue Line) is an elevated Chicago Transit Authority rapid transit stop in Oak Park, Illinois, serving the Forest Park branch of the Blue Line.
  • B. Forest Park station (CTA Blue Line)
    Forest Park station (CTA Blue Line) is a Chicago Transit Authority rapid transit station in Forest Park, Illinois, serving as the western terminal of the Blue Line.
  • C. Pulaski station (CTA Orange Line)
    Pulaski station (CTA Orange Line) is an elevated rapid transit stop on Chicago’s Orange Line serving the West Elsdon neighborhood near Midway Airport.
  • D. Argyle station (CTA)
    Argyle station (CTA) is an elevated Chicago 'L' rapid transit stop on the Red Line serving the Uptown neighborhood’s Argyle Street area.
  • E. Howard station (CTA Red Line)
    Howard station (CTA Red Line) is a major Chicago Transit Authority rail terminal on the city’s North Side that serves as an interchange between the Red, Purple, and Yellow Lines.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Oak Park station (CTA Green Line)
Target entity description: Oak Park station (CTA Green Line) is an elevated rapid transit stop in Oak Park, Illinois, serving Chicago's Green Line with access to the surrounding residential and commercial areas just west of the city.
  • A. Oak Park station (Blue Line)
    Oak Park station (Blue Line) is an elevated Chicago Transit Authority rapid transit stop in Oak Park, Illinois, serving the Forest Park branch of the Blue Line.
  • B. Forest Park station (CTA Blue Line)
    Forest Park station (CTA Blue Line) is a Chicago Transit Authority rapid transit station in Forest Park, Illinois, serving as the western terminal of the Blue Line.
  • C. Pulaski station (CTA Orange Line)
    Pulaski station (CTA Orange Line) is an elevated rapid transit stop on Chicago’s Orange Line serving the West Elsdon neighborhood near Midway Airport.
  • D. Argyle station (CTA)
    Argyle station (CTA) is an elevated Chicago 'L' rapid transit stop on the Red Line serving the Uptown neighborhood’s Argyle Street area.
  • E. Howard station (CTA Red Line)
    Howard station (CTA Red Line) is a major Chicago Transit Authority rail terminal on the city’s North Side that serves as an interchange between the Red, Purple, and Yellow Lines.
  • F. None of above. chosen

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_69d8b9ec79688190b86bdcef85a7b3aa completed April 10, 2026, 8:50 a.m.
NER Named-entity recognition batch_69e47489c59c8190bbffefad20dc6346 completed April 19, 2026, 6:22 a.m.
Created at: April 10, 2026, 10:07 a.m.