Triple
T187889
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Empire Builder |
E4022
|
entity |
| Predicate | startStation |
P389
|
FINISHED |
| Object | Chicago Union Station |
E17115
|
NE FINISHED |
How this triple was built (3 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: Chicago Union Station | Statement: [Empire Builder, startStation, Chicago Union Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Chicago Union Station Context triple: [Empire Builder, startStation, Chicago Union Station]
-
A.
Chicago Union Station
chosen
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.
-
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 Beaux-Arts transportation hub and major intercity rail terminal in Washington, D.C., serving as a gateway to the U.S. capital.
-
D.
South Station
South Station is Boston’s major intercity rail and bus terminal and a key MBTA subway hub in the city’s downtown.
-
E.
Grand Central Madison
Grand Central Madison is a major New York City rail terminal located beneath Grand Central Terminal, built to bring Long Island Rail Road service directly into Midtown Manhattan.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
PD
Predicate disambiguation
gpt-5-mini-2025-08-07
Target predicate: startStation Context triple: [Empire Builder, startStation, Chicago Union Station]
-
A.
hasRailStation
Indicates that one entity possesses, contains, or is served by a rail station.
-
B.
hasRailwayStation
Indicates that a place or location is served by, or contains, a railway station.
-
C.
startPoint
chosen
Indicates the initial location or position from which an object, path, or action begins.
-
D.
openedAsRedLineStation
Indicates that a station began operation specifically as part of the Red Line when it first opened.
-
E.
primaryStation
Indicates that one station is designated as the main or principal station associated with another entity or within a given context.
- F. None of above.
Provenance (4 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_69a25497e2f08190a040f8c6e1842643 |
completed | Feb. 28, 2026, 2:36 a.m. |
| NER | Named-entity recognition | batch_69a2594940e48190a3d8efbce46241c3 |
completed | Feb. 28, 2026, 2:56 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69a3836d16d081909d8046cf6a10d421 |
completed | March 1, 2026, 12:08 a.m. |
| PD | Predicate disambiguation | batch_69a25672332081909386f35f3ca15dd2 |
completed | Feb. 28, 2026, 2:44 a.m. |
Created at: Feb. 28, 2026, 2:40 a.m.