Triple

T3593526
Position Surface form Disambiguated ID Type / Status
Subject CTA Green Line E76081 entity
Predicate servesStation P839 FINISHED
Object 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.
 E376226 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: Halsted (Green Line) station | Statement: [CTA Green Line, servesStation, Halsted (Green Line) station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Halsted (Green Line) station
Context triple: [CTA Green Line, servesStation, Halsted (Green Line) station]
  • A. Halsted station (CTA Orange Line)
    Halsted station (CTA Orange Line) is a rapid transit stop on Chicago’s Orange Line serving the city’s Southwest Side near the Bridgeport and McKinley Park neighborhoods.
  • B. Chicago/Franklin station (Chicago "L")
    Chicago/Franklin station was a former elevated rapid transit stop on Chicago’s "L" system that operated on the North Side main line near the city’s River North area.
  • C. Sedgwick station (Chicago "L")
    Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
  • D. Berwyn station (Chicago "L")
    Berwyn station is a Chicago "L" rapid transit stop on the Red Line located in the Edgewater neighborhood on the city's North Side.
  • E. Loyola station (Chicago "L")
    Loyola station is a Chicago "L" rapid transit stop on the Red Line located in the Rogers Park neighborhood on the city’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: Halsted (Green Line) station
Triple: [CTA Green Line, servesStation, Halsted (Green Line) station]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Halsted (Green Line) station
Target entity description: 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.
  • A. Halsted station (CTA Orange Line)
    Halsted station (CTA Orange Line) is a rapid transit stop on Chicago’s Orange Line serving the city’s Southwest Side near the Bridgeport and McKinley Park neighborhoods.
  • B. Chicago/Franklin station (Chicago "L")
    Chicago/Franklin station was a former elevated rapid transit stop on Chicago’s "L" system that operated on the North Side main line near the city’s River North area.
  • C. Sedgwick station (Chicago "L")
    Sedgwick station is a historic Chicago "L" rapid transit stop on the city's North Side that has operated since the early 20th century.
  • D. Berwyn station (Chicago "L")
    Berwyn station is a Chicago "L" rapid transit stop on the Red Line located in the Edgewater neighborhood on the city's North Side.
  • E. Loyola station (Chicago "L")
    Loyola station is a Chicago "L" rapid transit stop on the Red Line located in the Rogers Park neighborhood on the city’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_69ad85d8042081908af94a04c410dec0 completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adc15bbbcc81908d6cf95f8e70c6ca completed March 8, 2026, 6:35 p.m.
NED1 Entity disambiguation (via context triple) batch_69b44efeacf481908dd9a26f348f9977 completed March 13, 2026, 5:53 p.m.
NEDg Description generation batch_69b453c225b481908cc06090bcd0ed64 completed March 13, 2026, 6:13 p.m.
NED2 Entity disambiguation (via description) batch_69b45f6aefd081909dfd1740f233dbf3 completed March 13, 2026, 7:03 p.m.
Created at: March 8, 2026, 3:22 p.m.