Triple

T797691
Position Surface form Disambiguated ID Type / Status
Subject Green Line (CTA) E17058 entity
Predicate servesStation P839 FINISHED
Object Central station (Green Line)
Central station (Green Line) is a Chicago Transit Authority 'L' station on the Green Line serving riders in Chicago, Illinois.
E17058 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 (Green Line) | Statement: [Green Line (CTA), servesStation, Central station (Green Line)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Central station (Green Line)
Context triple: [Green Line (CTA), servesStation, Central station (Green 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. METRO Green Line
    METRO Green Line is a light rail transit route in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with downtown St. Paul and key destinations in between.
  • C. MAX Green Line
    MAX Green Line is a light rail service in the Portland, Oregon metropolitan area that connects downtown Portland with Clackamas Town Center as part of TriMet’s MAX Light Rail system.
  • D. Green Line
    The Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides as part of the Chicago "L" system.
  • E. Green Line
    The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
  • 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 (Green Line)
Triple: [Green Line (CTA), servesStation, Central station (Green Line)]
Generated description
Central station (Green Line) is a Chicago Transit Authority 'L' station on the Green Line serving riders in Chicago, Illinois.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Central station (Green Line)
Target entity description: Central station (Green Line) is a Chicago Transit Authority 'L' station on the Green Line serving riders in Chicago, Illinois.
  • 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. METRO Green Line
    METRO Green Line is a light rail transit route in the Minneapolis–Saint Paul metropolitan area that connects downtown Minneapolis with downtown St. Paul and key destinations in between.
  • C. MAX Green Line
    MAX Green Line is a light rail service in the Portland, Oregon metropolitan area that connects downtown Portland with Clackamas Town Center as part of TriMet’s MAX Light Rail system.
  • D. Green Line chosen
    The Green Line is one of Chicago's elevated rapid transit routes, running primarily along the city's West and South Sides as part of the Chicago "L" system.
  • E. Green Line
    The Green Line is one of the color-coded rapid transit routes in the Washington Metro system, serving key neighborhoods in Washington, D.C. and parts of Maryland.
  • F. None of above.

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_69a49378b9c48190adbf5f62e5b7aca1 completed March 1, 2026, 7:28 p.m.
NER Named-entity recognition batch_69a4a7b342888190a344fe81a2c9f33c completed March 1, 2026, 8:55 p.m.
NED1 Entity disambiguation (via context triple) batch_69a76d7fba6c819097d8e2d962d0241f completed March 3, 2026, 11:23 p.m.
NEDg Description generation batch_69a783814b188190b449cd191667f1a1 completed March 4, 2026, 12:57 a.m.
NED2 Entity disambiguation (via description) batch_69a7840593988190b6882b456f0eea41 completed March 4, 2026, 12:59 a.m.
Created at: March 1, 2026, 7:38 p.m.