Triple

T2572450
Position Surface form Disambiguated ID Type / Status
Subject Scarborough RT E57694 entity
Predicate depot P14646 FINISHED
Object McCowan Yard
McCowan Yard is a former maintenance and storage facility in Scarborough, Toronto, that served the now-closed Scarborough RT rapid transit line.
 E280565 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: McCowan Yard | Statement: [Scarborough RT, depot, McCowan Yard]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: McCowan Yard
Context triple: [Scarborough RT, depot, McCowan Yard]
  • A. Bailey Yard
    Bailey Yard is the world’s largest railroad classification yard, located in North Platte, Nebraska, and serving as a major hub for freight train operations in the United States.
  • B. 54th Yard
    54th Yard is a maintenance and storage facility serving trains on Chicago's Pink Line rapid transit route.
  • C. Rozelle Park
    Rozelle Park is a historic public park and estate in Ayr, Scotland, known for its woodland walks, ornamental gardens, and cultural attractions.
  • D. Taylor Stadium
    Taylor Stadium is a college baseball venue in Columbia, Missouri, serving as the on-campus home field for the University of Missouri Tigers baseball program.
  • E. Buck Shaw Stadium
    Buck Shaw Stadium is a former multi-purpose sports venue in Santa Clara, California, best known in recent years for hosting Major League Soccer matches before being replaced by a modern soccer-specific stadium.
  • 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: McCowan Yard
Triple: [Scarborough RT, depot, McCowan Yard]
Generated description
McCowan Yard is a former maintenance and storage facility in Scarborough, Toronto, that served the now-closed Scarborough RT rapid transit line.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: McCowan Yard
Target entity description: McCowan Yard is a former maintenance and storage facility in Scarborough, Toronto, that served the now-closed Scarborough RT rapid transit line.
  • A. Bailey Yard
    Bailey Yard is the world’s largest railroad classification yard, located in North Platte, Nebraska, and serving as a major hub for freight train operations in the United States.
  • B. 54th Yard
    54th Yard is a maintenance and storage facility serving trains on Chicago's Pink Line rapid transit route.
  • C. Rozelle Park
    Rozelle Park is a historic public park and estate in Ayr, Scotland, known for its woodland walks, ornamental gardens, and cultural attractions.
  • D. Taylor Stadium
    Taylor Stadium is a college baseball venue in Columbia, Missouri, serving as the on-campus home field for the University of Missouri Tigers baseball program.
  • E. Buck Shaw Stadium
    Buck Shaw Stadium is a former multi-purpose sports venue in Santa Clara, California, best known in recent years for hosting Major League Soccer matches before being replaced by a modern soccer-specific stadium.
  • 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_69ab4a51410081908501dcf8bad9adc4 completed March 6, 2026, 9:42 p.m.
NER Named-entity recognition batch_69abd3853c848190970e8a2da16d726d completed March 7, 2026, 7:28 a.m.
NED1 Entity disambiguation (via context triple) batch_69af657028f08190b461442bfc7489e1 completed March 10, 2026, 12:27 a.m.
NEDg Description generation batch_69af6de00ff48190ba9198e91276ec3d completed March 10, 2026, 1:03 a.m.
NED2 Entity disambiguation (via description) batch_69af6f55bbb481908f75d923caeb8a1c completed March 10, 2026, 1:09 a.m.
Created at: March 6, 2026, 9:48 p.m.