Triple

T6619406
Position Surface form Disambiguated ID Type / Status
Subject Linden station E149636 entity
Predicate hasAdjacentStation P231 FINISHED
Object Central station (CTA Purple Line)
Central station is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line located in Evanston, Illinois.
 E608079 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: Central station (CTA Purple Line) | Statement: [Linden station, hasAdjacentStation, Central station (CTA Purple Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Central station (CTA Purple Line)
Context triple: [Linden station, hasAdjacentStation, Central station (CTA Purple Line)]
  • A. 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.
  • B. Addison station (CTA Red Line)
    Addison station (CTA Red Line) is a Chicago 'L' rapid transit stop on the Red Line located in the Lakeview neighborhood, best known for serving fans attending games and events at nearby Wrigley Field.
  • C. Quincy station (CTA)
    Quincy station (CTA) is a historic elevated rapid transit stop in downtown Chicago’s Loop, known for its preserved 19th-century architecture and service to multiple ‘L’ lines including the Orange Line.
  • D. Addison station (CTA Blue Line)
    Addison station (CTA Blue Line) is an elevated Chicago Transit Authority rapid transit stop on the Blue Line serving the Avondale neighborhood on the city’s Northwest Side.
  • E. Western station (CTA Orange Line)
    Western station (CTA Orange Line) is an elevated rapid transit stop on Chicago's Orange Line serving the city's Southwest Side near the Brighton Park and Gage Park neighborhoods.
  • 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: Central station (CTA Purple Line)
Triple: [Linden station, hasAdjacentStation, Central station (CTA Purple Line)]
Generated description
Central station is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line located in Evanston, Illinois.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Central station (CTA Purple Line)
Target entity description: Central station is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line located in Evanston, Illinois.
  • A. 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.
  • B. Addison station (CTA Red Line)
    Addison station (CTA Red Line) is a Chicago 'L' rapid transit stop on the Red Line located in the Lakeview neighborhood, best known for serving fans attending games and events at nearby Wrigley Field.
  • C. Quincy station (CTA)
    Quincy station (CTA) is a historic elevated rapid transit stop in downtown Chicago’s Loop, known for its preserved 19th-century architecture and service to multiple ‘L’ lines including the Orange Line.
  • D. Addison station (CTA Blue Line)
    Addison station (CTA Blue Line) is an elevated Chicago Transit Authority rapid transit stop on the Blue Line serving the Avondale neighborhood on the city’s Northwest Side.
  • E. Western station (CTA Orange Line)
    Western station (CTA Orange Line) is an elevated rapid transit stop on Chicago's Orange Line serving the city's Southwest Side near the Brighton Park and Gage Park neighborhoods.
  • 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_69c687ed8a9c81908bb671717cb192ef completed March 27, 2026, 1:36 p.m.
NER Named-entity recognition batch_69c6af5ca97481909f8a7dc47249b4d3 completed March 27, 2026, 4:25 p.m.
NED1 Entity disambiguation (via context triple) batch_69c6e4461e748190b4feead6ef16a01c completed March 27, 2026, 8:10 p.m.
NEDg Description generation batch_69c6e4ea6f6881909b85e33120dffc18 completed March 27, 2026, 8:13 p.m.
NED2 Entity disambiguation (via description) batch_69c6e8fcde0c8190baa4cac159b8e590 completed March 27, 2026, 8:30 p.m.
Created at: March 27, 2026, 1:58 p.m.