Triple

T7181538
Position Surface form Disambiguated ID Type / Status
Subject Grand Trunk Railway E167457 entity
Predicate keyRoute P5619 FINISHED
Object Toronto–Sarnia line
The Toronto–Sarnia line is a major railway corridor in Ontario, Canada, connecting Toronto with the border city of Sarnia and forming an important part of the region’s passenger and freight rail network.
E647282 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: Toronto–Sarnia line | Statement: [Grand Trunk Railway, keyRoute, Toronto–Sarnia line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: Toronto–Sarnia line
Context triple: [Grand Trunk Railway, keyRoute, Toronto–Sarnia line]
  • A. Leamington–Stratford line
    The Leamington–Stratford line is a railway route in Warwickshire, England, connecting Leamington Spa with the historic town of Stratford-upon-Avon.
  • B. Barrie line
    The Barrie line is a GO Transit commuter rail corridor in the Greater Toronto Area that runs between Toronto and the city of Barrie.
  • C. Waterloo–Reading line
    The Waterloo–Reading line is a suburban and regional railway route in southern England that connects London Waterloo with Reading, serving numerous commuter towns in Surrey and Berkshire.
  • D. Waterloo to Exeter Line
    The Waterloo to Exeter Line is a major railway route in southern England connecting London with Exeter via towns in Surrey, Hampshire, and Dorset.
  • E. Stouffville line
    The Stouffville line is a commuter rail corridor in the Greater Toronto Area operated by GO Transit, connecting downtown Toronto with communities to the northeast including Markham and Stouffville.
  • 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: Toronto–Sarnia line
Triple: [Grand Trunk Railway, keyRoute, Toronto–Sarnia line]
Generated description
The Toronto–Sarnia line is a major railway corridor in Ontario, Canada, connecting Toronto with the border city of Sarnia and forming an important part of the region’s passenger and freight rail network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: Toronto–Sarnia line
Target entity description: The Toronto–Sarnia line is a major railway corridor in Ontario, Canada, connecting Toronto with the border city of Sarnia and forming an important part of the region’s passenger and freight rail network.
  • A. Leamington–Stratford line
    The Leamington–Stratford line is a railway route in Warwickshire, England, connecting Leamington Spa with the historic town of Stratford-upon-Avon.
  • B. Barrie line
    The Barrie line is a GO Transit commuter rail corridor in the Greater Toronto Area that runs between Toronto and the city of Barrie.
  • C. Waterloo–Reading line
    The Waterloo–Reading line is a suburban and regional railway route in southern England that connects London Waterloo with Reading, serving numerous commuter towns in Surrey and Berkshire.
  • D. Waterloo to Exeter Line
    The Waterloo to Exeter Line is a major railway route in southern England connecting London with Exeter via towns in Surrey, Hampshire, and Dorset.
  • E. Stouffville line
    The Stouffville line is a commuter rail corridor in the Greater Toronto Area operated by GO Transit, connecting downtown Toronto with communities to the northeast including Markham and Stouffville.
  • 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_69c6888a7c548190a3d39b52a393080f completed March 27, 2026, 1:39 p.m.
NER Named-entity recognition batch_69c6e8bc25088190a7d7f3ba2461b5e9 completed March 27, 2026, 8:29 p.m.
NED1 Entity disambiguation (via context triple) batch_69c7b93d04ec8190ac5c5bf9ace7eca1 completed March 28, 2026, 11:19 a.m.
NEDg Description generation batch_69c7b9e55f84819099af471a65bb68aa completed March 28, 2026, 11:22 a.m.
NED2 Entity disambiguation (via description) batch_69c7ba9317548190946e21c2731d58a7 completed March 28, 2026, 11:25 a.m.
Created at: March 27, 2026, 2:49 p.m.