Triple

T15762817
Position Surface form Disambiguated ID Type / Status
Subject CTA Purple Line E382139 entity
Predicate connectsTo P845 FINISHED
Object 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.
E1176033 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: Red Line at Howard | Statement: [CTA Purple Line, connectsTo, Red Line at Howard]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Red Line at Howard
Context triple: [CTA Purple Line, connectsTo, Red Line at Howard]
  • 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. Wilson Red/Purple Line station
    Wilson Red/Purple Line station is an elevated Chicago Transit Authority rail station in the Uptown neighborhood that serves both the Red and Purple Lines.
  • C. Red Line Braintree Branch
    The Red Line Braintree Branch is a southern extension of Boston's MBTA Red Line rapid transit system that serves communities between Quincy and Braintree.
  • D. 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.
  • E. Potomac Avenue station
    Potomac Avenue station is a Washington Metro rapid transit station in Washington, D.C., served by the Blue, Orange, and Silver Lines.
  • 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: Red Line at Howard
Triple: [CTA Purple Line, connectsTo, Red Line at Howard]
Generated description
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.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Red Line at Howard
Target entity description: 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.
  • 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. Wilson Red/Purple Line station
    Wilson Red/Purple Line station is an elevated Chicago Transit Authority rail station in the Uptown neighborhood that serves both the Red and Purple Lines.
  • C. Red Line Braintree Branch
    The Red Line Braintree Branch is a southern extension of Boston's MBTA Red Line rapid transit system that serves communities between Quincy and Braintree.
  • D. 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.
  • E. Potomac Avenue station
    Potomac Avenue station is a Washington Metro rapid transit station in Washington, D.C., served by the Blue, Orange, and Silver Lines.
  • 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_69ff8776c2488190ad27fd79e2ce4e14 completed May 9, 2026, 7:13 p.m.
NEDg Description generation batch_69ff8b6c44d081908e35ca17b5ce2189 completed May 9, 2026, 7:30 p.m.
NED2 Entity disambiguation (via description) batch_69ff8ca1c1f08190aeb6f7421d54c2de completed May 9, 2026, 7:36 p.m.
Created at: April 10, 2026, 4:47 a.m.