Triple

T3529530
Position Surface form Disambiguated ID Type / Status
Subject Dundas Street E74623 entity
Predicate hasPublicTransit P522 FINISHED
Object Dundas streetcar line (historical and current segments)
The Dundas streetcar line is a Toronto streetcar route, historically and currently operating along parts of Dundas Street, that has served as a key east–west transit corridor in the city.
 E365781 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: Dundas streetcar line (historical and current segments) | Statement: [Dundas Street, hasPublicTransit, Dundas streetcar line (historical and current segments)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Dundas streetcar line (historical and current segments)
Context triple: [Dundas Street, hasPublicTransit, Dundas streetcar line (historical and current segments)]
  • A. Spadina streetcar line
    The Spadina streetcar line is a major Toronto Transit Commission route running along Spadina Avenue, connecting key downtown destinations including the University of Toronto’s St. George campus.
  • B. Queens Quay streetcar line
    The Queens Quay streetcar line is a Toronto streetcar route that runs along the city’s central waterfront, serving key destinations and attractions on Queens Quay.
  • C. Toronto streetcar system
    The Toronto streetcar system is one of the largest and oldest electric streetcar networks in North America, serving as a key component of Toronto’s public transit and urban identity.
  • D. Toronto Civic Railways
    Toronto Civic Railways was a municipally owned streetcar system that operated in Toronto in the early 20th century before being absorbed into the unified public transit network.
  • E. Trillium Line
    The Trillium Line is a diesel light rail transit line in Ottawa, Ontario, forming part of the city’s O-Train network and connecting southern communities with the downtown area.
  • 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: Dundas streetcar line (historical and current segments)
Triple: [Dundas Street, hasPublicTransit, Dundas streetcar line (historical and current segments)]
Generated description
The Dundas streetcar line is a Toronto streetcar route, historically and currently operating along parts of Dundas Street, that has served as a key east–west transit corridor in the city.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Dundas streetcar line (historical and current segments)
Target entity description: The Dundas streetcar line is a Toronto streetcar route, historically and currently operating along parts of Dundas Street, that has served as a key east–west transit corridor in the city.
  • A. Spadina streetcar line
    The Spadina streetcar line is a major Toronto Transit Commission route running along Spadina Avenue, connecting key downtown destinations including the University of Toronto’s St. George campus.
  • B. Queens Quay streetcar line
    The Queens Quay streetcar line is a Toronto streetcar route that runs along the city’s central waterfront, serving key destinations and attractions on Queens Quay.
  • C. Toronto streetcar system
    The Toronto streetcar system is one of the largest and oldest electric streetcar networks in North America, serving as a key component of Toronto’s public transit and urban identity.
  • D. Toronto Civic Railways
    Toronto Civic Railways was a municipally owned streetcar system that operated in Toronto in the early 20th century before being absorbed into the unified public transit network.
  • E. Trillium Line
    The Trillium Line is a diesel light rail transit line in Ottawa, Ontario, forming part of the city’s O-Train network and connecting southern communities with the downtown area.
  • 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_69ad85d1a3948190931fd1ea1f49717b completed March 8, 2026, 2:21 p.m.
NER Named-entity recognition batch_69adbc9764a881908aa8d25dc9adf59e completed March 8, 2026, 6:14 p.m.
NED1 Entity disambiguation (via context triple) batch_69b37e93c1988190a9ab7698bf63e8e6 completed March 13, 2026, 3:03 a.m.
NEDg Description generation batch_69b380a6b6ec8190be0741cb9535b650 completed March 13, 2026, 3:12 a.m.
NED2 Entity disambiguation (via description) batch_69b3812927e48190a84f3c7fa55d070a completed March 13, 2026, 3:14 a.m.
Created at: March 8, 2026, 3:19 p.m.