Triple

T19659436
Position Surface form Disambiguated ID Type / Status
Subject Howard station (CTA Red Line) E472039 entity
Predicate fareZone P844 FINISHED
Object CTA single-zone system — 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: CTA single-zone system | Statement: [Howard station (CTA Red Line), fareZone, CTA single-zone system]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: CTA single-zone system
Context triple: [Howard station (CTA Red Line), fareZone, CTA single-zone system]
  • A. Central station
    Central station is a major Mass Transit Railway (MTR) interchange and one of the busiest transport hubs on Hong Kong Island, connecting multiple urban rail lines and pedestrian networks.
  • B. Central station
    Central station is a major railway hub providing key train connections for travelers to and from Cambridge city center.
  • C. Central station
    Central station is a key Massachusetts Bay Transportation Authority (MBTA) subway stop on the Red Line located in Cambridge, Massachusetts, serving the Central Square area.
  • D. CTC/Arena Station
    CTC/Arena Station is a light rail station in Charlotte, North Carolina, serving the Spectrum Center and the surrounding uptown area.
  • E. CTA
    CTA is the IATA airport code for Catania–Fontanarossa Airport, the main international airport serving Catania and eastern Sicily, Italy.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: CTA single-zone system
Target entity description: The CTA single-zone system is a fare structure used by Chicago's transit authority in which the same base fare applies across the entire network rather than varying by distance or zones.
  • A. Central station
    Central station is a major Mass Transit Railway (MTR) interchange and one of the busiest transport hubs on Hong Kong Island, connecting multiple urban rail lines and pedestrian networks.
  • B. Central station
    Central station is a major railway hub providing key train connections for travelers to and from Cambridge city center.
  • C. Central station
    Central station is a key Massachusetts Bay Transportation Authority (MBTA) subway stop on the Red Line located in Cambridge, Massachusetts, serving the Central Square area.
  • D. CTC/Arena Station
    CTC/Arena Station is a light rail station in Charlotte, North Carolina, serving the Spectrum Center and the surrounding uptown area.
  • E. CTA
    CTA is the IATA airport code for Catania–Fontanarossa Airport, the main international airport serving Catania and eastern Sicily, Italy.
  • F. None of above. chosen

Provenance (2 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_69d8e51395348190ac1416d46dfc6db0 completed April 10, 2026, 11:54 a.m.
NER Named-entity recognition batch_69e641485ce481908b3860fa5e3a9f6e completed April 20, 2026, 3:07 p.m.
Created at: April 10, 2026, 1:45 p.m.