Triple

T844969
Position Surface form Disambiguated ID Type / Status
Subject Purple Line (CTA) E18256 entity
Predicate hasStation P35 FINISHED
Object 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.
 E99583 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: Central station (Purple Line) | Statement: [Purple Line (CTA), hasStation, Central station (Purple Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Central station (Purple Line)
Context triple: [Purple Line (CTA), hasStation, Central station (Purple Line)]
  • A. Central station (MBTA) on the Red Line
    Central station (MBTA) on the Red Line is an underground rapid transit stop in Cambridge, Massachusetts, serving the Central Square neighborhood on the Massachusetts Bay Transportation Authority’s Red Line.
  • B. Government Center station
    Government Center station is a major Boston subway hub and transfer point in downtown Boston, serving multiple MBTA Green Line branches and the Blue Line.
  • C. Innovation Center station
    Innovation Center station is a Washington Metro rail station in Virginia located near the Dulles Technology Corridor, serving the Silver Line.
  • D. Cicero station (Blue Line)
    Cicero station (Blue Line) is a Chicago Transit Authority rapid transit stop on the Blue Line serving the city’s West Side.
  • E. Crescent Street station
    Crescent Street station is a New York City Subway station in Brooklyn served by the J train.
  • 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: Central station (Purple Line)
Triple: [Purple Line (CTA), hasStation, Central station (Purple Line)]
Generated description
Central station (Purple Line) is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line serving the Evanston area north of Chicago.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Central station (Purple Line)
Target entity description: Central station (Purple Line) is a Chicago Transit Authority 'L' rapid transit stop on the Purple Line serving the Evanston area north of Chicago.
  • A. Central station (MBTA) on the Red Line
    Central station (MBTA) on the Red Line is an underground rapid transit stop in Cambridge, Massachusetts, serving the Central Square neighborhood on the Massachusetts Bay Transportation Authority’s Red Line.
  • B. Government Center station
    Government Center station is a major Boston subway hub and transfer point in downtown Boston, serving multiple MBTA Green Line branches and the Blue Line.
  • C. Innovation Center station
    Innovation Center station is a Washington Metro rail station in Virginia located near the Dulles Technology Corridor, serving the Silver Line.
  • D. Cicero station (Blue Line)
    Cicero station (Blue Line) is a Chicago Transit Authority rapid transit stop on the Blue Line serving the city’s West Side.
  • E. Crescent Street station
    Crescent Street station is a New York City Subway station in Brooklyn served by the J train.
  • 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_69a7929c8c9c8190a0279f347ab64765 completed March 4, 2026, 2:02 a.m.
NEDg Description generation batch_69a792fcb75881908562b79005d62b3b completed March 4, 2026, 2:03 a.m.
NED2 Entity disambiguation (via description) batch_69a793fd988481908ad3c6d2cd46026d completed March 4, 2026, 2:07 a.m.
Created at: March 1, 2026, 7:38 p.m.