Triple

T15362906
Position Surface form Disambiguated ID Type / Status
Subject Red Line at Jackson E367333 entity
Predicate connectsCorridorTo P5520 FINISHED
Object Blue Line Jackson station pedestrian tunnel
The Blue Line Jackson station pedestrian tunnel is an underground passageway in downtown Chicago that links the Blue Line platforms at Jackson to other CTA rail lines and station areas, allowing riders to transfer without exiting the fare-paid zone.
E1153726 NE FINISHED

How this triple was built (5 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: Blue Line Jackson station pedestrian tunnel | Statement: [Red Line at Jackson, connectsCorridorTo, Blue Line Jackson station pedestrian tunnel]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Blue Line Jackson station pedestrian tunnel
Context triple: [Red Line at Jackson, connectsCorridorTo, Blue Line Jackson station pedestrian tunnel]
  • A. Red Line at Jackson
    The Red Line at Jackson is a major Chicago 'L' subway station in the Loop that serves the CTA Red Line and provides a key downtown transfer point between multiple rail lines.
  • B. Silver Line Transitway tunnel
    The Silver Line Transitway tunnel is an underground bus rapid transit corridor in Boston that carries MBTA Silver Line buses between South Station and the Seaport District.
  • C. White Flint Metro station
    White Flint Metro station is a Washington Metro Red Line station in North Bethesda, Maryland, serving the surrounding commercial and residential developments along Rockville Pike.
  • D. METRO Blue Line light rail station
    The METRO Blue Line light rail station at Terminal 1–Lindbergh is a transit stop on Minneapolis–Saint Paul’s METRO Blue Line that provides direct rail access between the airport terminal and the broader Twin Cities metropolitan area.
  • E. Union Station Rail Corridor
    The Union Station Rail Corridor is a major railway corridor in downtown Toronto that serves as the central hub for numerous commuter and intercity train services.
  • 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: Blue Line Jackson station pedestrian tunnel
Triple: [Red Line at Jackson, connectsCorridorTo, Blue Line Jackson station pedestrian tunnel]
Generated description
The Blue Line Jackson station pedestrian tunnel is an underground passageway in downtown Chicago that links the Blue Line platforms at Jackson to other CTA rail lines and station areas, allowing riders to transfer without exiting the fare-paid zone.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Blue Line Jackson station pedestrian tunnel
Target entity description: The Blue Line Jackson station pedestrian tunnel is an underground passageway in downtown Chicago that links the Blue Line platforms at Jackson to other CTA rail lines and station areas, allowing riders to transfer without exiting the fare-paid zone.
  • A. Red Line at Jackson
    The Red Line at Jackson is a major Chicago 'L' subway station in the Loop that serves the CTA Red Line and provides a key downtown transfer point between multiple rail lines.
  • B. Silver Line Transitway tunnel
    The Silver Line Transitway tunnel is an underground bus rapid transit corridor in Boston that carries MBTA Silver Line buses between South Station and the Seaport District.
  • C. White Flint Metro station
    White Flint Metro station is a Washington Metro Red Line station in North Bethesda, Maryland, serving the surrounding commercial and residential developments along Rockville Pike.
  • D. METRO Blue Line light rail station
    The METRO Blue Line light rail station at Terminal 1–Lindbergh is a transit stop on Minneapolis–Saint Paul’s METRO Blue Line that provides direct rail access between the airport terminal and the broader Twin Cities metropolitan area.
  • E. Union Station Rail Corridor
    The Union Station Rail Corridor is a major railway corridor in downtown Toronto that serves as the central hub for numerous commuter and intercity train services.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: connectsCorridorTo
Context triple: [Red Line at Jackson, connectsCorridorTo, Blue Line Jackson station pedestrian tunnel]
  • A. isPartOfCorridorSystem
    Indicates that one entity forms a component or segment within a larger interconnected corridor system.
  • B. hasCorridor chosen
    Indicates that one entity includes, is connected by, or provides access through a corridor to another entity.
  • C. parallelTransportCorridor
    Indicates a relationship where one path, route, or connection is used to transport something in a way that preserves its structure or configuration relative to another, typically along a shared or corresponding trajectory.
  • D. isMostHeavilyTraveledCorridorIn
    Indicates that a particular route or corridor experiences the highest volume of travel or traffic within a specified area or region.
  • E. partOfTransportCorridorTo
    Indicates that one entity forms a component or segment of a larger transport corridor leading to another entity.
  • F. None of above.

Provenance (6 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_69d85a1483788190ad93c2748e8af34b completed April 10, 2026, 2:01 a.m.
NER Named-entity recognition batch_69e03e479f188190bbbc3dcd73853e02 completed April 16, 2026, 1:41 a.m.
NED1 Entity disambiguation (via context triple) batch_69ff0b4a181c8190bffc1ac1a86e215d completed May 9, 2026, 10:24 a.m.
NEDg Description generation batch_69ff0f82441c81909a8ae13817fd3e96 completed May 9, 2026, 10:42 a.m.
NED2 Entity disambiguation (via description) batch_69ff0fd586708190a54b33efd27d84b2 completed May 9, 2026, 10:43 a.m.
PD Predicate disambiguation batch_69deca991e5081908b0df3d1ee7d5338 completed April 14, 2026, 11:15 p.m.
Created at: April 10, 2026, 3:18 a.m.