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.