Triple

T4536055
Position Surface form Disambiguated ID Type / Status
Subject Cermak–McCormick Place station E107410 entity
Predicate replaced P101 FINISHED
Object Cermak station (Green Line)
Cermak station (Green Line) was a former Chicago 'L' rapid transit station on the Green Line that once served the Near South Side before being closed and later replaced by Cermak–McCormick Place station.
 E450306 NE FINISHED

How this triple was built (4 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: Cermak station (Green Line) | Statement: [Cermak–McCormick Place station, replaced, Cermak station (Green Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Cermak station (Green Line)
Context triple: [Cermak–McCormick Place station, replaced, Cermak station (Green Line)]
  • A. Halsted (Green Line) station
    Halsted (Green Line) station is an elevated Chicago 'L' rapid transit stop on the Green Line located in the Englewood neighborhood on Chicago’s South Side.
  • B. 54th/Cermak station
    54th/Cermak station is a Chicago 'L' rapid transit stop in Cicero, Illinois, serving as the western terminal of the CTA Pink 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. 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.
  • E. Sheridan station (CTA Red Line)
    Sheridan station (CTA Red Line) is an elevated Chicago Transit Authority rapid transit stop in the Wrigleyville/Lakeview area serving the Red Line.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: Cermak station (Green Line)
Triple: [Cermak–McCormick Place station, replaced, Cermak station (Green Line)]
Generated description
Cermak station (Green Line) was a former Chicago 'L' rapid transit station on the Green Line that once served the Near South Side before being closed and later replaced by Cermak–McCormick Place station.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Cermak station (Green Line)
Target entity description: Cermak station (Green Line) was a former Chicago 'L' rapid transit station on the Green Line that once served the Near South Side before being closed and later replaced by Cermak–McCormick Place station.
  • A. Halsted (Green Line) station
    Halsted (Green Line) station is an elevated Chicago 'L' rapid transit stop on the Green Line located in the Englewood neighborhood on Chicago’s South Side.
  • B. 54th/Cermak station
    54th/Cermak station is a Chicago 'L' rapid transit stop in Cicero, Illinois, serving as the western terminal of the CTA Pink 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. 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.
  • E. Sheridan station (CTA Red Line)
    Sheridan station (CTA Red Line) is an elevated Chicago Transit Authority rapid transit stop in the Wrigleyville/Lakeview area serving the Red Line.
  • F. None of above. chosen

Provenance (5 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_69bd43f922788190b7edfa294e39b178 completed March 20, 2026, 12:56 p.m.
NER Named-entity recognition batch_69bd57b634b08190845d04213cf8d5b9 completed March 20, 2026, 2:20 p.m.
NED1 Entity disambiguation (via context triple) batch_69bdacf5858081909d38cad86d4014f2 completed March 20, 2026, 8:24 p.m.
NEDg Description generation batch_69bdad97c9e0819093849c81fb2a3d8c completed March 20, 2026, 8:27 p.m.
NED2 Entity disambiguation (via description) batch_69bdae2dd51081909a24017a4b983f70 completed March 20, 2026, 8:29 p.m.
Created at: March 20, 2026, 1:04 p.m.