Triple
T3434746
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Amtrak California |
E72422
|
entity |
| Predicate | usesRollingStockBrand |
P48230
|
FINISHED |
| Object | Surfliner cars |
E350032
|
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: Surfliner cars | Statement: [Amtrak California, usesRollingStockBrand, Surfliner cars]
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Surfliner cars Context triple: [Amtrak California, usesRollingStockBrand, Surfliner cars]
-
A.
Surfliner cars
chosen
Surfliner cars are bi-level passenger railcars used primarily on Amtrak’s Pacific Surfliner and related corridor services in California, designed for high-capacity, comfortable intercity travel.
-
B.
Shoreliner coaches
Shoreliner coaches are a type of commuter rail passenger car commonly used in the Northeastern United States, known for their bilevel-like high-capacity design and compatibility with push-pull train operations.
-
C.
Superliner bi-level cars
Superliner bi-level cars are double-decker passenger railcars used by Amtrak on long-distance routes, designed to provide increased capacity and enhanced comfort for overnight and scenic train travel.
-
D.
Viewliner sleeping cars
Viewliner sleeping cars are Amtrak’s single-level long-distance sleeper railcars designed with individual roomettes and bedrooms for overnight passenger comfort on routes using standard-height equipment.
-
E.
Colorado Railcar DMU
The Colorado Railcar DMU is a self-propelled diesel multiple unit railcar designed for North American commuter and regional passenger service, notable for meeting FRA crashworthiness standards without requiring a separate locomotive.
- 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_69ad85af50288190a854b76653deee6f |
completed | March 8, 2026, 2:20 p.m. |
| NER | Named-entity recognition | batch_69adb9c3300881909f5c3544f8923b41 |
completed | March 8, 2026, 6:02 p.m. |
| NED1 | Entity disambiguation (via context triple) | batch_69b3547fd15481909c310b731231d5bb |
completed | March 13, 2026, 12:04 a.m. |
Created at: March 8, 2026, 3:16 p.m.