Triple

T844973
Position Surface form Disambiguated ID Type / Status
Subject Purple Line (CTA) E18256 entity
Predicate hasStation P35 FINISHED
Object Dempster station (Purple Line)
Dempster station (Purple Line) is an elevated Chicago Transit Authority rapid transit stop in Evanston, Illinois, serving the Purple Line.
 E101654 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: Dempster station (Purple Line) | Statement: [Purple Line (CTA), hasStation, Dempster station (Purple Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Dempster station (Purple Line)
Context triple: [Purple Line (CTA), hasStation, Dempster station (Purple Line)]
  • A. Central station (Purple Line)
    Central station (Purple Line) is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line serving the Evanston area north of Chicago.
  • B. Penn Station (Light RailLink)
    Penn Station (Light RailLink) is a light rail station in Baltimore that serves as a key transit stop adjacent to the city’s main intercity train terminal, Baltimore Penn Station.
  • C. Jackson station (Blue Line)
    Jackson station (Blue Line) is an underground Chicago Transit Authority rapid transit stop in the Loop that serves the Blue Line trains running through downtown Chicago.
  • D. Crescent Street station
    Crescent Street station is a New York City Subway station in Brooklyn served by the J train.
  • E. Park Street station
    Park Street station is a major downtown Boston transit hub on the MBTA system, serving multiple Green Line branches and providing connections to the Red 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: Dempster station (Purple Line)
Triple: [Purple Line (CTA), hasStation, Dempster station (Purple Line)]
Generated description
Dempster station (Purple Line) is an elevated Chicago Transit Authority rapid transit stop in Evanston, Illinois, serving the Purple Line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Dempster station (Purple Line)
Target entity description: Dempster station (Purple Line) is an elevated Chicago Transit Authority rapid transit stop in Evanston, Illinois, serving the Purple Line.
  • A. Central station (Purple Line)
    Central station (Purple Line) is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line serving the Evanston area north of Chicago.
  • B. Penn Station (Light RailLink)
    Penn Station (Light RailLink) is a light rail station in Baltimore that serves as a key transit stop adjacent to the city’s main intercity train terminal, Baltimore Penn Station.
  • C. Jackson station (Blue Line)
    Jackson station (Blue Line) is an underground Chicago Transit Authority rapid transit stop in the Loop that serves the Blue Line trains running through downtown Chicago.
  • D. Crescent Street station
    Crescent Street station is a New York City Subway station in Brooklyn served by the J train.
  • E. Park Street station
    Park Street station is a major downtown Boston transit hub on the MBTA system, serving multiple Green Line branches and providing connections to the Red Line.
  • 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_69a4938b04208190b82e1df6b572c548 completed March 1, 2026, 7:29 p.m.
NER Named-entity recognition batch_69a4ac09249c8190a8099b94a3c9e2cc completed March 1, 2026, 9:13 p.m.
NED1 Entity disambiguation (via context triple) batch_69a7a3bb2fa08190b1e8f26ceb04b08c completed March 4, 2026, 3:15 a.m.
NEDg Description generation batch_69a7a5929de48190b01f45fbf19c72dc completed March 4, 2026, 3:22 a.m.
NED2 Entity disambiguation (via description) batch_69a7a63205308190b55b76116c0d5e7c completed March 4, 2026, 3:25 a.m.
Created at: March 1, 2026, 7:38 p.m.