Triple

T2741905
Position Surface form Disambiguated ID Type / Status
Subject Union Station (Toronto) E60768 entity
Predicate formerStructureOnSite P14623 FINISHED
Object earlier Union Station (opened 1873)
Earlier Union Station (opened 1873) was Toronto’s second major railway terminal, serving as the city’s primary passenger rail hub in the late 19th and early 20th centuries before being replaced by the current Union Station.
E295982 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: earlier Union Station (opened 1873) | Statement: [Union Station (Toronto), formerStructureOnSite, earlier Union Station (opened 1873)]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: earlier Union Station (opened 1873)
Context triple: [Union Station (Toronto), formerStructureOnSite, earlier Union Station (opened 1873)]
  • A. Union Depot station
    Union Depot station is a major multimodal transit hub in downtown Saint Paul, Minnesota, serving light rail, intercity trains, and buses.
  • B. Springfield Union Station
    Springfield Union Station is a historic intermodal transportation hub in downtown Springfield, Massachusetts, serving as a major regional center for rail and bus travel.
  • C. Dallas Union Station
    Dallas Union Station is a historic railway and transit hub in downtown Dallas, Texas, serving Amtrak, commuter rail, and local light rail services.
  • D. Chicago Union Station
    Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
  • E. Union Station (Pittsburgh)
    Union Station (Pittsburgh) is a historic Beaux-Arts railroad terminal in downtown Pittsburgh, renowned for its grand rotunda and role as a major early 20th-century transportation hub.
  • 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: earlier Union Station (opened 1873)
Triple: [Union Station (Toronto), formerStructureOnSite, earlier Union Station (opened 1873)]
Generated description
Earlier Union Station (opened 1873) was Toronto’s second major railway terminal, serving as the city’s primary passenger rail hub in the late 19th and early 20th centuries before being replaced by the current Union Station.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: earlier Union Station (opened 1873)
Target entity description: Earlier Union Station (opened 1873) was Toronto’s second major railway terminal, serving as the city’s primary passenger rail hub in the late 19th and early 20th centuries before being replaced by the current Union Station.
  • A. Union Depot station
    Union Depot station is a major multimodal transit hub in downtown Saint Paul, Minnesota, serving light rail, intercity trains, and buses.
  • B. Springfield Union Station
    Springfield Union Station is a historic intermodal transportation hub in downtown Springfield, Massachusetts, serving as a major regional center for rail and bus travel.
  • C. Dallas Union Station
    Dallas Union Station is a historic railway and transit hub in downtown Dallas, Texas, serving Amtrak, commuter rail, and local light rail services.
  • D. Chicago Union Station
    Chicago Union Station is a major intercity and commuter rail terminal in downtown Chicago that serves as a central hub for Amtrak and regional rail services.
  • E. Union Station (Pittsburgh)
    Union Station (Pittsburgh) is a historic Beaux-Arts railroad terminal in downtown Pittsburgh, renowned for its grand rotunda and role as a major early 20th-century transportation hub.
  • F. None of above. chosen
PD Predicate disambiguation gpt-5-mini-2025-08-07
Target predicate: formerStructureOnSite
Context triple: [Union Station (Toronto), formerStructureOnSite, earlier Union Station (opened 1873)]
  • A. formerSiteOf
    Indicates that a location previously hosted or contained something (such as a structure, organization, or event) that is no longer present there.
  • B. usedStructure
    Indicates that one entity makes use of, relies on, or operates through a particular structure (physical, logical, or organizational) to perform its function or action.
  • C. originalStructureType
    Indicates the type or category of the structure that an entity originally had before any changes or transformations.
  • D. previousStructure chosen
    Indicates that one structure directly precedes another in a defined sequence or configuration.
  • E. currentStructure
    Indicates that an entity is the present or active structural configuration or organization associated with another entity.
  • 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_69ab4b77febc819095603eb012cd141b completed March 6, 2026, 9:47 p.m.
NER Named-entity recognition batch_69abdb303898819098a7d192e29817f8 completed March 7, 2026, 8 a.m.
NED1 Entity disambiguation (via context triple) batch_69afbbca8ac081909ce86d4cd911b4f1 completed March 10, 2026, 6:35 a.m.
NEDg Description generation batch_69afbcc1dd988190826ab05e55adf1ee completed March 10, 2026, 6:40 a.m.
NED2 Entity disambiguation (via description) batch_69afbd452e1c8190a3ee9eaf642e80a0 completed March 10, 2026, 6:42 a.m.
PD Predicate disambiguation batch_69abd829f1e88190aab1d54f87c69714 completed March 7, 2026, 7:47 a.m.
Created at: March 6, 2026, 9:56 p.m.