Triple
T2672481
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak Capitol Limited |
E55777
|
entity |
| Predicate | primaryEndpointStation |
P34947
|
FINISHED |
| Object | Washington Union Station |
E223
|
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: Washington Union Station | Statement: [Amtrak Capitol Limited, primaryEndpointStation, Washington Union Station]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Washington Union Station Context triple: [Amtrak Capitol Limited, primaryEndpointStation, Washington Union Station]
-
A.
Alexandria Union Station
Alexandria Union Station is a historic passenger rail station in Alexandria, Virginia, serving Amtrak and Virginia Railway Express trains near the Old Town area.
-
B.
Union Station (Washington Metro)
Union Station is a major Washington Metro station in Washington, D.C., serving as a key transit hub connected to the historic Union Station rail terminal and multiple local and regional transportation services.
-
C.
Union Station
chosen
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.
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.
-
E.
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.
- 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: primaryEndpointStation Context triple: [Amtrak Capitol Limited, primaryEndpointStation, Washington Union Station]
-
A.
hasEndpointStation
chosen
Indicates that something (such as a route, line, or service) has a specific station as one of its terminal endpoints.
-
B.
terminusStation
Indicates that a station serves as the final endpoint or terminal stop for a given route or service.
-
C.
stationName
Indicates the name assigned to a particular station in the relationship.
-
D.
startingStation
Indicates the station or location where a journey, route, or trip begins.
-
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_69ab49e54de48190be708cd1cf8be073 |
completed | March 6, 2026, 9:40 p.m. |
| NER | Named-entity recognition | batch_69abd98f98908190b5c6fb38d3d4367a |
completed | March 7, 2026, 7:53 a.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69afa05f1ba48190a93a399d1067912c |
completed | March 10, 2026, 4:38 a.m. |
| PD | Predicate disambiguation | batch_69abd8190ad481908f3e14ac84d0940a |
completed | March 7, 2026, 7:47 a.m. |
Created at: March 6, 2026, 9:54 p.m.