Triple

T19297810
Position Surface form Disambiguated ID Type / Status
Subject Chicago Transit Authority Purple Line stations E482612 entity
Predicate downtownTerminusFor P6243 FINISHED
Object Harold Washington Library–State/Van Buren station (during Loop operation) NE NERFINISHED

How this triple was built (3 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: Harold Washington Library–State/Van Buren station (during Loop operation) | Statement: [Chicago Transit Authority Purple Line stations, downtownTerminusFor, Harold Washington Library–State/Van Buren station (during Loop operation)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Harold Washington Library–State/Van Buren station (during Loop operation)
Context triple: [Chicago Transit Authority Purple Line stations, downtownTerminusFor, Harold Washington Library–State/Van Buren station (during Loop operation)]
  • A. Harold Washington Library–State/Van Buren station chosen
    Harold Washington Library–State/Van Buren station is a Chicago 'L' rapid transit stop in the Loop, serving multiple CTA lines and located adjacent to the Harold Washington Library Center.
  • B. Washington/Wabash station (CTA)
    Washington/Wabash station (CTA) is an elevated Chicago 'L' station in the Loop serving the Brown, Green, Orange, Pink, and Purple Lines.
  • C. Haymarket Metro station
    Haymarket Metro station is a key underground station on the Tyne and Wear Metro network serving central Newcastle upon Tyne.
  • D. 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.
  • E. O'Hare station (CTA Blue Line)
    O'Hare station (CTA Blue Line) is a Chicago Transit Authority rapid transit station located at O'Hare International Airport, serving as the Blue Line’s western terminus and a major gateway between the airport and downtown Chicago.
  • F. None of above.
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: downtownTerminusFor
Context triple: [Chicago Transit Authority Purple Line stations, downtownTerminusFor, Harold Washington Library–State/Van Buren station (during Loop operation)]
  • A. isDowntownEndpointOf chosen
    Indicates that a location serves as the downtown terminus or endpoint of a route, line, or path.
  • B. railroadTerminusFor
    Indicates that one location serves as the end point or final station of a particular railroad line for another location.
  • C. terminusCitySoutheast
    Indicates that something serves as the southeastern terminus or endpoint of a route, line, or connection in a particular city.
  • D. terminusCity
    Indicates that a transportation route or service ends or has its final stop in a particular city.
  • E. terminusStation
    Indicates that a station serves as the final endpoint or terminal stop for a given route or service.
  • F. None of above.

Provenance (3 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_69d8e8cf61b0819096fe3e4107827c4e completed April 10, 2026, 12:10 p.m.
NER Named-entity recognition batch_69e5fc86f8648190920d122bb141c6e5 completed April 20, 2026, 10:14 a.m.
PD Predicate disambiguation batch_69e4dd0bc7508190a6f9d56bd4c3404f completed April 19, 2026, 1:47 p.m.
Created at: April 10, 2026, 1:31 p.m.