Triple

T5034156
Position Surface form Disambiguated ID Type / Status
Subject Lakeview, Chicago E113379 entity
Predicate hasCTAStation P39430 FINISHED
Object Belmont station E166082 NE FINISHED

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: Belmont station | Statement: [Lakeview, Chicago, hasCTAStation, Belmont station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Belmont station
Context triple: [Lakeview, Chicago, hasCTAStation, Belmont station]
  • A. Belmont station chosen
    Belmont station is a major Chicago Transit Authority 'L' station on the North Side that serves as a key transfer point between multiple rapid transit lines.
  • B. Belmont station
    Belmont station is a commuter rail stop in Downers Grove, Illinois, served by Metra’s BNSF Railway Line connecting the suburb to downtown Chicago.
  • C. Hawthorne station
    Hawthorne station is a commuter rail stop in Mount Pleasant, New York, serving passengers on the Metro-North Railroad’s Harlem Line.
  • D. Medford station
    Medford station is a Long Island Rail Road commuter rail stop located in Medford, New York, serving passengers on the Ronkonkoma Branch.
  • E. Winchester Center station
    Winchester Center station is a commuter rail station in Winchester, Massachusetts, serving MBTA's Lowell Line north of Boston.
  • 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: hasCTAStation
Context triple: [Lakeview, Chicago, hasCTAStation, Belmont station]
  • A. hasEndpointStation
    Indicates that something (such as a route, line, or service) has a specific station as one of its terminal endpoints.
  • B. hasRailStation
    Indicates that one entity possesses, contains, or is served by a rail station.
  • C. hasStationCode
    Indicates that an entity is associated with a specific station identification code.
  • D. hasStationBuilding
    Indicates that a station is associated with or includes a station building as part of its facilities.
  • E. hasMetroStations chosen
    Indicates that a place or area is served by one or more metro (subway) stations.
  • F. None of above.

Provenance (4 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_69bd44384298819089c49e7c330ec7b8 completed March 20, 2026, 12:57 p.m.
NER Named-entity recognition batch_69bd73b8646c8190b3cc20193e4639ee completed March 20, 2026, 4:20 p.m.
NED1 Entity disambiguation (via context triple) batch_69bea477efec8190a84a0186f5517a43 completed March 21, 2026, 2 p.m.
PD Predicate disambiguation batch_69bd71509e9c8190a60c1d8d04936a12 completed March 20, 2026, 4:09 p.m.
Created at: March 20, 2026, 1:36 p.m.