Triple
T34468031
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Barcelona Metro Series 500 trains |
E884827
|
entity |
| Predicate | instanceOf |
P0
|
FINISHED |
| Object | narrow-gauge train |
C53302
|
CONCEPT FINISHED |
How this triple was built (1 step)
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.
CD
Concept disambiguation
gpt-5-mini-2025-08-07
Target class: narrow-gauge train Context triple: [Barcelona Metro Series 500 trains, instanceOf, narrow-gauge train]
-
A.
narrow-gauge railway line
A narrow-gauge railway line is a railroad whose track gauge is significantly smaller than the standard gauge, typically used in regions with difficult terrain, lower construction costs, or specialized transport needs.
-
B.
narrow-gauge multiple unit
chosen
A narrow-gauge multiple unit is a self-propelled trainset designed to operate on railway tracks with a gauge narrower than the standard gauge, typically used for regional, suburban, or specialized rail services.
-
C.
wagon train
A wagon train is a group of wagons traveling together, typically across long distances, for mutual support, protection, and resource sharing.
-
D.
narrow-gauge railway terminus
A narrow-gauge railway terminus is the end station or final stopping point on a railway line that uses tracks of narrower width than the standard gauge, where trains begin or conclude their journeys and related operations are managed.
-
E.
cogwheel railway
A cogwheel railway is a type of railway that uses a toothed rack rail engaged by a cogwheel on the train to enable safe operation on steep gradients.
- F. None of above.
Provenance (1 batch)
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_69f349c880408190ade571c471ab154a |
completed | April 30, 2026, 12:23 p.m. |
Created at: May 1, 2026, 2:01 a.m.