Triple

T21381121
Position Surface form Disambiguated ID Type / Status
Subject Damen Avenue E527356 entity
Predicate hasTransitStation P726 FINISHED
Object Damen station (CTA Blue Line – Congress branch, closed)
Damen station (CTA Blue Line – Congress branch, closed) was a former Chicago Transit Authority rapid transit stop on the Blue Line’s Congress branch located along Damen Avenue in Chicago.
 E1481110 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: Damen station (CTA Blue Line – Congress branch, closed) | Statement: [Damen Avenue, hasTransitStation, Damen station (CTA Blue Line – Congress branch, closed)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Damen station (CTA Blue Line – Congress branch, closed)
Context triple: [Damen Avenue, hasTransitStation, Damen station (CTA Blue Line – Congress branch, closed)]
  • A. Damen (CTA Pink Line station)
    Damen is a Chicago Transit Authority Pink Line rapid transit station serving the Lower West Side neighborhood near the Pilsen area.
  • B. CTA Blue Line at Harlem station
    CTA Blue Line at Harlem station is a rapid transit stop on Chicago’s Blue Line serving the city’s Northwest Side and nearby suburbs with connections to local and regional bus routes.
  • C. Damen (Brown Line) station
    Damen (Brown Line) station is an elevated Chicago 'L' rapid transit stop in the city's North Side, serving the Brown Line.
  • D. Damen (O'Hare branch)
    Damen (O'Hare branch) is a Chicago 'L' rapid transit station on the Blue Line's O'Hare branch serving the city's Wicker Park/Bucktown area.
  • E. Division station (CTA Blue Line)
    Division station (CTA Blue Line) is a Chicago 'L' subway station on the Blue Line serving the Wicker Park neighborhood.
  • 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: Damen station (CTA Blue Line – Congress branch, closed)
Triple: [Damen Avenue, hasTransitStation, Damen station (CTA Blue Line – Congress branch, closed)]
Generated description
Damen station (CTA Blue Line – Congress branch, closed) was a former Chicago Transit Authority rapid transit stop on the Blue Line’s Congress branch located along Damen Avenue in Chicago.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Damen station (CTA Blue Line – Congress branch, closed)
Target entity description: Damen station (CTA Blue Line – Congress branch, closed) was a former Chicago Transit Authority rapid transit stop on the Blue Line’s Congress branch located along Damen Avenue in Chicago.
  • A. Damen (CTA Pink Line station)
    Damen is a Chicago Transit Authority Pink Line rapid transit station serving the Lower West Side neighborhood near the Pilsen area.
  • B. CTA Blue Line at Harlem station
    CTA Blue Line at Harlem station is a rapid transit stop on Chicago’s Blue Line serving the city’s Northwest Side and nearby suburbs with connections to local and regional bus routes.
  • C. Damen (Brown Line) station
    Damen (Brown Line) station is an elevated Chicago 'L' rapid transit stop in the city's North Side, serving the Brown Line.
  • D. Damen (O'Hare branch)
    Damen (O'Hare branch) is a Chicago 'L' rapid transit station on the Blue Line's O'Hare branch serving the city's Wicker Park/Bucktown area.
  • E. Division station (CTA Blue Line)
    Division station (CTA Blue Line) is a Chicago 'L' subway station on the Blue Line serving the Wicker Park neighborhood.
  • 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_69e0b51f363c8190944000ab5523b02b completed April 16, 2026, 10:08 a.m.
NER Named-entity recognition batch_69e8b0cec99881908481d0b08df358a8 completed April 22, 2026, 11:28 a.m.
NED1 Entity disambiguation (via context triple) batch_6a09b42473b08190b0cf48ed71c09de4 completed May 17, 2026, 12:27 p.m.
NEDg Description generation batch_6a09b494bc348190b72a5e862b74711a completed May 17, 2026, 12:29 p.m.
NED2 Entity disambiguation (via description) batch_6a09b60be86c8190ba4e0890da8dadb1 completed May 17, 2026, 12:35 p.m.
Created at: April 16, 2026, 5:11 p.m.