Triple

T10416116
Position Surface form Disambiguated ID Type / Status
Subject Steel Plaza station E245519 entity
Predicate hasService P182 FINISHED
Object Pittsburgh Light Rail Blue Line
The Pittsburgh Light Rail Blue Line is a light rail service in Pittsburgh, Pennsylvania, that connects downtown with various southern suburbs as part of the Port Authority’s “T” system.
 E864910 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: Pittsburgh Light Rail Blue Line | Statement: [Steel Plaza station, hasService, Pittsburgh Light Rail Blue Line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Pittsburgh Light Rail Blue Line
Context triple: [Steel Plaza station, hasService, Pittsburgh Light Rail Blue Line]
  • A. Ravenswood Line
    The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
  • B. Cleveland RTA Red Line
    The Cleveland RTA Red Line is a heavy rail rapid transit route in Cleveland, Ohio, running between Cleveland Hopkins International Airport and the city’s east side via downtown.
  • C. Baltimore Light Rail
    Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
  • D. River Line light rail
    River Line light rail is a New Jersey light rail transit service that runs along the Delaware River corridor, connecting Trenton and Camden with multiple intermediate communities.
  • E. Shaker Heights rapid transit line
    The Shaker Heights rapid transit line is an electric light rail system serving the Cleveland, Ohio suburbs, known for its early 20th-century suburban planning and integration with the city’s transit network.
  • 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: Pittsburgh Light Rail Blue Line
Triple: [Steel Plaza station, hasService, Pittsburgh Light Rail Blue Line]
Generated description
The Pittsburgh Light Rail Blue Line is a light rail service in Pittsburgh, Pennsylvania, that connects downtown with various southern suburbs as part of the Port Authority’s “T” system.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Pittsburgh Light Rail Blue Line
Target entity description: The Pittsburgh Light Rail Blue Line is a light rail service in Pittsburgh, Pennsylvania, that connects downtown with various southern suburbs as part of the Port Authority’s “T” system.
  • A. Ravenswood Line
    The Ravenswood Line is the historical name for what is now known as the Chicago Transit Authority's Brown Line, an elevated rapid transit route serving Chicago's North Side.
  • B. Cleveland RTA Red Line
    The Cleveland RTA Red Line is a heavy rail rapid transit route in Cleveland, Ohio, running between Cleveland Hopkins International Airport and the city’s east side via downtown.
  • C. Baltimore Light Rail
    Baltimore Light Rail is a regional light rail transit system serving Baltimore, Maryland, and its surrounding suburbs.
  • D. River Line light rail
    River Line light rail is a New Jersey light rail transit service that runs along the Delaware River corridor, connecting Trenton and Camden with multiple intermediate communities.
  • E. Shaker Heights rapid transit line
    The Shaker Heights rapid transit line is an electric light rail system serving the Cleveland, Ohio suburbs, known for its early 20th-century suburban planning and integration with the city’s transit network.
  • 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_69d381be340c8190b05998703d42d224 completed April 6, 2026, 9:49 a.m.
NER Named-entity recognition batch_69d4ea108fec8190819423630888fa2b completed April 7, 2026, 11:27 a.m.
NED1 Entity disambiguation (via context triple) batch_69d89f8a5b00819080c303bb0fc82f5a completed April 10, 2026, 6:58 a.m.
NEDg Description generation batch_69d8a1656b348190ba932d03402d6a4d completed April 10, 2026, 7:06 a.m.
NED2 Entity disambiguation (via description) batch_69d8a2b82bb48190899f37a967fef444 completed April 10, 2026, 7:11 a.m.
Created at: April 6, 2026, 12:10 p.m.