Triple

T15762818
Position Surface form Disambiguated ID Type / Status
Subject CTA Purple Line E382139 entity
Predicate connectsTo P845 FINISHED
Object Yellow Line at Howard
Yellow Line at Howard is a Chicago Transit Authority rapid transit service that begins at Howard station, providing Yellow Line trains with access to the rest of the ‘L’ network.
E1176246 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: Yellow Line at Howard | Statement: [CTA Purple Line, connectsTo, Yellow Line at Howard]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Yellow Line at Howard
Context triple: [CTA Purple Line, connectsTo, Yellow Line at Howard]
  • A. Red Line at Howard
    Red Line at Howard is a major Chicago Transit Authority rail terminal on the city’s North Side that serves as the northern terminus of the Red Line and a key transfer point to other ‘L’ routes.
  • B. 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.
  • C. Silver Line Way station
    Silver Line Way station is a bus rapid transit stop on Boston’s MBTA Silver Line located in the South Boston Waterfront district.
  • D. U Street station
    U Street station is a Washington Metro subway station in Washington, D.C., located in the U Street Corridor and serving the Green and Yellow Lines.
  • E. Northline Transit Center/HCC station
    Northline Transit Center/HCC station is a light rail station in Houston, Texas, serving as a key northern hub that connects METRORail service with local bus routes and the nearby Houston Community College campus.
  • 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: Yellow Line at Howard
Triple: [CTA Purple Line, connectsTo, Yellow Line at Howard]
Generated description
Yellow Line at Howard is a Chicago Transit Authority rapid transit service that begins at Howard station, providing Yellow Line trains with access to the rest of the ‘L’ network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Yellow Line at Howard
Target entity description: Yellow Line at Howard is a Chicago Transit Authority rapid transit service that begins at Howard station, providing Yellow Line trains with access to the rest of the ‘L’ network.
  • A. Red Line at Howard
    Red Line at Howard is a major Chicago Transit Authority rail terminal on the city’s North Side that serves as the northern terminus of the Red Line and a key transfer point to other ‘L’ routes.
  • B. 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.
  • C. Silver Line Way station
    Silver Line Way station is a bus rapid transit stop on Boston’s MBTA Silver Line located in the South Boston Waterfront district.
  • D. U Street station
    U Street station is a Washington Metro subway station in Washington, D.C., located in the U Street Corridor and serving the Green and Yellow Lines.
  • E. Northline Transit Center/HCC station
    Northline Transit Center/HCC station is a light rail station in Houston, Texas, serving as a key northern hub that connects METRORail service with local bus routes and the nearby Houston Community College campus.
  • 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_69d86d9e6b44819085d1f6a969ecb74c completed April 10, 2026, 3:25 a.m.
NER Named-entity recognition batch_69e050b6c9fc8190a1bcf763c4b04b12 completed April 16, 2026, 3 a.m.
NED1 Entity disambiguation (via context triple) batch_69ff9099335c8190b6f0fb336b3dc212 completed May 9, 2026, 7:52 p.m.
NEDg Description generation batch_69ff93463d348190bd2c4cbd58bb2154 completed May 9, 2026, 8:04 p.m.
NED2 Entity disambiguation (via description) batch_69ff93b6321c8190baaee806dca1f73c completed May 9, 2026, 8:06 p.m.
Created at: April 10, 2026, 4:47 a.m.