Triple

T15067856
Position Surface form Disambiguated ID Type / Status
Subject 54th/Cermak station E379799 entity
Predicate partOf P40 FINISHED
Object Cermak Branch of the Pink Line
The Cermak Branch of the Pink Line is a segment of Chicago's 'L' rapid transit system serving the city's West Side and nearby suburbs.
E379799 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 Branch of the Pink Line | Statement: [54th/Cermak station, partOf, Cermak Branch of the Pink Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Cermak Branch of the Pink Line
Context triple: [54th/Cermak station, partOf, Cermak Branch of the Pink Line]
  • A. Ravenswood branch (Brown Line)
    The Ravenswood branch of Chicago's Brown Line is an elevated rapid transit route on the city's North Side, serving neighborhoods such as Lincoln Park, Lakeview, and Ravenswood and connecting them to the Loop.
  • B. South Chicago Branch of Metra Electric District
    The South Chicago Branch of Metra Electric District is a commuter rail line on Chicago’s South Side that provides electric train service between downtown Chicago and the South Chicago neighborhood.
  • C. 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.
  • D. 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.
  • E. Irving Park (Brown Line)
    Irving Park (Brown Line) is an elevated Chicago 'L' rapid transit station on the city's North Side serving the CTA Brown 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 Branch of the Pink Line
Triple: [54th/Cermak station, partOf, Cermak Branch of the Pink Line]
Generated description
The Cermak Branch of the Pink Line is a segment of Chicago's 'L' rapid transit system serving the city's West Side and nearby suburbs.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Cermak Branch of the Pink Line
Target entity description: The Cermak Branch of the Pink Line is a segment of Chicago's 'L' rapid transit system serving the city's West Side and nearby suburbs.
  • A. Ravenswood branch (Brown Line)
    The Ravenswood branch of Chicago's Brown Line is an elevated rapid transit route on the city's North Side, serving neighborhoods such as Lincoln Park, Lakeview, and Ravenswood and connecting them to the Loop.
  • B. South Chicago Branch of Metra Electric District
    The South Chicago Branch of Metra Electric District is a commuter rail line on Chicago’s South Side that provides electric train service between downtown Chicago and the South Chicago neighborhood.
  • C. 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.
  • D. 54th/Cermak station chosen
    54th/Cermak station is a Chicago 'L' rapid transit stop in Cicero, Illinois, serving as the western terminal of the CTA Pink Line.
  • E. Irving Park (Brown Line)
    Irving Park (Brown Line) is an elevated Chicago 'L' rapid transit station on the city's North Side serving the CTA Brown Line.
  • F. None of above.

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_69d85cd7683881908d405c1b5d7b4f7f completed April 10, 2026, 2:13 a.m.
NER Named-entity recognition batch_69dedeebc7e48190a86b4f0afe8844bb completed April 15, 2026, 12:42 a.m.
NED1 Entity disambiguation (via context triple) batch_69fea5cb04e88190a42bb0e516df61bc completed May 9, 2026, 3:11 a.m.
NEDg Description generation batch_69fea66a04988190b483210c1671d287 completed May 9, 2026, 3:13 a.m.
NED2 Entity disambiguation (via description) batch_69fea70e2fbc81908f168925b06bdbd6 completed May 9, 2026, 3:16 a.m.
Created at: April 10, 2026, 3:02 a.m.