Triple

T9011414
Position Surface form Disambiguated ID Type / Status
Subject GO Transit Milton line E215481 entity
Predicate startPoint P389 FINISHED
Object Union Station
Union Station is Toronto's primary railway and transit hub, serving as a central terminus for regional and intercity trains as well as local subway and bus connections.
 E149870 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: Union Station | Statement: [GO Transit Milton line, startPoint, Union Station]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07 
Target entity: Union Station
Context triple: [GO Transit Milton line, startPoint, Union Station]
  • A. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • B. Union Station
    Union Station is the main railway station and a historic transportation hub in downtown Los Angeles, renowned for its Mission Revival and Art Deco architecture.
  • C. Union Station
    Union Station is a historic train station and transportation hub in Worcester, Massachusetts, known for its grand Beaux-Arts architecture and role as a key gateway to the city.
  • D. Union Station
    Union Station is a historic train station name commonly used for major passenger rail terminals in several North American cities.
  • E. Union Station
    Union Station was the historic central railway terminal in Ottawa, Canada, later repurposed as the Senate of Canada Building.
  • 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: Union Station
Triple: [GO Transit Milton line, startPoint, Union Station]
Generated description
Union Station is Toronto's primary railway and transit hub, serving as a central terminus for regional and intercity trains as well as local subway and bus connections.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07 
Target entity: Union Station
Target entity description: Union Station is Toronto's primary railway and transit hub, serving as a central terminus for regional and intercity trains as well as local subway and bus connections.
  • A. Union Station chosen
    Union Station is Toronto’s primary railway and transit hub, connecting regional and intercity trains with the city’s subway and streetcar network.
  • B. Union Station
    Union Station is a major historic transportation hub in downtown Dallas that serves as a key rail and transit connection point for the city.
  • C. Union Station
    Union Station is a historic train station name commonly used for major passenger rail terminals in several North American cities.
  • D. Union Station
    Union Station was the historic central railway terminal in Ottawa, Canada, later repurposed as the Senate of Canada Building.
  • E. Union Station
    Union Station is a historic Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
  • F. None of above.

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_69ca83a2bf088190986ee7a8eb90407d completed March 30, 2026, 2:07 p.m.
NER Named-entity recognition batch_69cc69c1571881908d0b144786b5ee1f completed April 1, 2026, 12:41 a.m.
NED1 Entity disambiguation (via context triple) batch_69cffda389988190beb6b6ea9352efcc completed April 3, 2026, 5:49 p.m.
NEDg Description generation batch_69cfff51b8c0819093b2c348fd7819fe completed April 3, 2026, 5:56 p.m.
NED2 Entity disambiguation (via description) batch_69d0014b9c108190b4abe8c974677d31 completed April 3, 2026, 6:04 p.m.
Created at: March 30, 2026, 7:06 p.m.