Triple

T18617496
Position Surface form Disambiguated ID Type / Status
Subject Pilsen E455067 entity
Predicate hasPublicTransit P522 FINISHED
Object 18th station (CTA Pink Line)
18th station (CTA Pink Line) is an elevated Chicago Transit Authority rapid transit stop serving the Pilsen neighborhood on the Pink Line.
 E1333305 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: 18th station (CTA Pink Line) | Statement: [Pilsen, hasPublicTransit, 18th station (CTA Pink Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: 18th station (CTA Pink Line)
Context triple: [Pilsen, hasPublicTransit, 18th station (CTA Pink Line)]
  • A. Paulina station (CTA)
    Paulina station (CTA) was a former Chicago 'L' rapid transit station on the Brown Line located in the Lakeview neighborhood.
  • B. 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.
  • C. 111th Street–Morgan Park station
    111th Street–Morgan Park station is a Metra commuter rail stop on the Rock Island District line serving Chicago’s Beverly and Morgan Park neighborhoods.
  • 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. Western (Brown Line) station
    Western (Brown Line) station is an elevated Chicago 'L' rapid transit stop on the city's Brown Line, serving the Lincoln Square neighborhood on Chicago's North Side.
  • 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: 18th station (CTA Pink Line)
Triple: [Pilsen, hasPublicTransit, 18th station (CTA Pink Line)]
Generated description
18th station (CTA Pink Line) is an elevated Chicago Transit Authority rapid transit stop serving the Pilsen neighborhood on the Pink Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: 18th station (CTA Pink Line)
Target entity description: 18th station (CTA Pink Line) is an elevated Chicago Transit Authority rapid transit stop serving the Pilsen neighborhood on the Pink Line.
  • A. Paulina station (CTA)
    Paulina station (CTA) was a former Chicago 'L' rapid transit station on the Brown Line located in the Lakeview neighborhood.
  • B. 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.
  • C. 111th Street–Morgan Park station
    111th Street–Morgan Park station is a Metra commuter rail stop on the Rock Island District line serving Chicago’s Beverly and Morgan Park neighborhoods.
  • 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. Western (Brown Line) station
    Western (Brown Line) station is an elevated Chicago 'L' rapid transit stop on the city's Brown Line, serving the Lincoln Square neighborhood on Chicago's North Side.
  • 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_69d8d38bbe7c8190bdec3138e7d413c9 completed April 10, 2026, 10:40 a.m.
NER Named-entity recognition batch_69e54d06c1f8819094fbfa56eca07eaa completed April 19, 2026, 9:45 p.m.
NED1 Entity disambiguation (via context triple) batch_6a050390bd4c8190b623f08a12eee39b completed May 13, 2026, 11:04 p.m.
NEDg Description generation batch_6a050455e6e8819084927b1c2d4a5237 completed May 13, 2026, 11:08 p.m.
NED2 Entity disambiguation (via description) batch_6a0505cbc11481908e61d90dd64f6212 completed May 13, 2026, 11:14 p.m.
Created at: April 10, 2026, 11:46 a.m.