Triple

T458473
Position Surface form Disambiguated ID Type / Status
Subject Line 3 Scarborough E7282 entity
Predicate plannedSuccessor P11447 FINISHED
Object Scarborough Subway Extension of Line 2
The Scarborough Subway Extension of Line 2 is a planned Toronto subway project that will replace the aging Scarborough RT with an extended, fully grade-separated rapid transit line serving Scarborough.
E46848 NE FINISHED

How this triple was built (5 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: Scarborough Subway Extension of Line 2 | Statement: [Line 3 Scarborough, plannedSuccessor, Scarborough Subway Extension of Line 2]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Scarborough Subway Extension of Line 2
Context triple: [Line 3 Scarborough, plannedSuccessor, Scarborough Subway Extension of Line 2]
  • A. Line 3 Scarborough
    Line 3 Scarborough was a former light metro line of the Toronto subway system that served the Scarborough district in Toronto, Ontario, Canada.
  • B. 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.
  • C. IND Crosstown Line
    The IND Crosstown Line is a New York City Subway line in Brooklyn and Queens served by the G train, notable for being the only major line that does not enter Manhattan.
  • D. Second Avenue Subway
    The Second Avenue Subway is a New York City Subway line on Manhattan’s East Side, built to relieve congestion on the Lexington Avenue Line and long envisioned as a major north–south transit corridor.
  • E. Line 2 Bloor–Danforth
    Line 2 Bloor–Danforth is a major east–west subway line in Toronto’s rapid transit system, running primarily along Bloor Street and Danforth Avenue.
  • 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: Scarborough Subway Extension of Line 2
Triple: [Line 3 Scarborough, plannedSuccessor, Scarborough Subway Extension of Line 2]
Generated description
The Scarborough Subway Extension of Line 2 is a planned Toronto subway project that will replace the aging Scarborough RT with an extended, fully grade-separated rapid transit line serving Scarborough.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Scarborough Subway Extension of Line 2
Target entity description: The Scarborough Subway Extension of Line 2 is a planned Toronto subway project that will replace the aging Scarborough RT with an extended, fully grade-separated rapid transit line serving Scarborough.
  • A. Line 3 Scarborough chosen
    Line 3 Scarborough was a former light metro line of the Toronto subway system that served the Scarborough district in Toronto, Ontario, Canada.
  • B. 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.
  • C. IND Crosstown Line
    The IND Crosstown Line is a New York City Subway line in Brooklyn and Queens served by the G train, notable for being the only major line that does not enter Manhattan.
  • D. Second Avenue Subway
    The Second Avenue Subway is a New York City Subway line on Manhattan’s East Side, built to relieve congestion on the Lexington Avenue Line and long envisioned as a major north–south transit corridor.
  • E. Line 2 Bloor–Danforth
    Line 2 Bloor–Danforth is a major east–west subway line in Toronto’s rapid transit system, running primarily along Bloor Street and Danforth Avenue.
  • F. None of above.
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: plannedSuccessor
Context triple: [Line 3 Scarborough, plannedSuccessor, Scarborough Subway Extension of Line 2]
  • A. successorDesignated
    Indicates that one entity has been formally chosen or named to take over the role, position, or responsibilities of another entity in the future.
  • B. successor
    Indicates that one entity directly follows another in an ordered sequence or position.
  • C. eventualSuccessor chosen
    Indicates that one entity will become the successor of another at some later point in time, rather than immediately.
  • D. successorStateRole
    Indicates that one role represents the state or position that directly follows and replaces another role in a sequence or process.
  • E. successorInCommand
    Indicates that one entity is designated to assume command authority immediately after another entity, typically when the latter is unavailable or their term ends.
  • F. None of above.

Provenance (6 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_69a2e7e5c5bc8190a1dc8178218fba40 completed Feb. 28, 2026, 1:04 p.m.
NER Named-entity recognition batch_69a2efa3163081909acff040a22bd559 completed Feb. 28, 2026, 1:37 p.m.
NED1 Entity disambiguation (via context triple) batch_69a44f56b3808190b34ddd3e60b84f85 completed March 1, 2026, 2:38 p.m.
NEDg Description generation batch_69a450d6a538819098c31a4f429bb149 completed March 1, 2026, 2:44 p.m.
NED2 Entity disambiguation (via description) batch_69a45143456081909aebbed149a5c200 completed March 1, 2026, 2:46 p.m.
PD Predicate disambiguation batch_69a2ede75b6c81908350103d21f22a03 completed Feb. 28, 2026, 1:30 p.m.
Created at: Feb. 28, 2026, 1:12 p.m.