Triple

T15877265
Position Surface form Disambiguated ID Type / Status
Subject CTA Yellow Line E384981 entity
Predicate connectsWith P37 FINISHED
Object Purple Line at Howard
The Purple Line at Howard is a Chicago Transit Authority rapid transit route that serves as a key connection point for trains running between the northern suburbs and the city’s North Side.
E1182814 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: Purple Line at Howard | Statement: [CTA Yellow Line, connectsWith, Purple Line at Howard]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Purple Line at Howard
Context triple: [CTA Yellow Line, connectsWith, Purple Line at Howard]
  • A. 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.
  • B. 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.
  • C. Purple Line at Clark/Lake
    The Purple Line at Clark/Lake is a Chicago 'L' rapid transit service that stops at the downtown Clark/Lake station complex in the Loop.
  • D. 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.
  • E. Purple Line
    The Purple Line is a light rail route in Houston, Texas, that serves as part of the METRORail system, connecting downtown with southeastern neighborhoods and key destinations.
  • 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: Purple Line at Howard
Triple: [CTA Yellow Line, connectsWith, Purple Line at Howard]
Generated description
The Purple Line at Howard is a Chicago Transit Authority rapid transit route that serves as a key connection point for trains running between the northern suburbs and the city’s North Side.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Purple Line at Howard
Target entity description: The Purple Line at Howard is a Chicago Transit Authority rapid transit route that serves as a key connection point for trains running between the northern suburbs and the city’s North Side.
  • A. 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.
  • B. 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.
  • C. Purple Line at Clark/Lake
    The Purple Line at Clark/Lake is a Chicago 'L' rapid transit service that stops at the downtown Clark/Lake station complex in the Loop.
  • D. 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.
  • E. Purple Line
    The Purple Line is a rapid transit line that forms part of the Baku Metro system in Baku, Azerbaijan.
  • 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_69d86da4e86481909f1325fdc971b5ec completed April 10, 2026, 3:25 a.m.
NER Named-entity recognition batch_69e155fec9d4819081efea504e1e3952 completed April 16, 2026, 9:34 p.m.
NED1 Entity disambiguation (via context triple) batch_69ffb043b6d48190bf9a36a3e00403c0 completed May 9, 2026, 10:08 p.m.
NEDg Description generation batch_69ffb13fdb6c819091c3ee5c1f199031 completed May 9, 2026, 10:12 p.m.
NED2 Entity disambiguation (via description) batch_69ffb208aef881909b3a00e0015c27df completed May 9, 2026, 10:15 p.m.
Created at: April 10, 2026, 4:51 a.m.