Triple
T12709846
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak services at Los Angeles Union Station |
E303686
|
entity |
| Predicate | ownedBy |
P347
|
FINISHED |
| Object | Amtrak (rolling stock and services) |
E1072
|
NE FINISHED |
How this triple was built (2 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: Amtrak (rolling stock and services) | Statement: [Amtrak services at Los Angeles Union Station, ownedBy, Amtrak (rolling stock and services)]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Amtrak (rolling stock and services) Context triple: [Amtrak services at Los Angeles Union Station, ownedBy, Amtrak (rolling stock and services)]
-
A.
Amtrak locomotives
Amtrak locomotives are the diesel and electric engines that power the United States’ national passenger rail services across both short- and long-distance routes.
-
B.
Amtrak Siemens Charger locomotives
Amtrak Siemens Charger locomotives are modern, diesel-electric passenger train engines used across various Amtrak routes for higher efficiency, lower emissions, and improved performance compared to older locomotive fleets.
-
C.
Amtrak General Electric Genesis locomotives
Amtrak General Electric Genesis locomotives are a series of diesel-electric passenger locomotives built by GE for Amtrak, widely used across its intercity routes in the United States.
-
D.
Amtrak
chosen
Amtrak is the United States’ national passenger railroad service, operating intercity and long-distance trains across much of the country.
-
E.
Amtrak California bi-level coaches
Amtrak California bi-level coaches are double-decker passenger railcars used on California’s state-supported Amtrak routes, designed to provide high-capacity, comfortable intercity service with features tailored to regional corridor operations.
- F. None of above.
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Provenance (3 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_69d7bdf084148190ab9d513dc0735af4 |
completed | April 9, 2026, 2:55 p.m. |
| NER | Named-entity recognition | batch_69d96207b2d881908314efc3e350aa78 |
completed | April 10, 2026, 8:48 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69f671b8f43081909d4a8e4241c813a1 |
completed | May 2, 2026, 9:50 p.m. |
Created at: April 9, 2026, 5:23 p.m.