Triple
T214559
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Positive Train Control |
E4790
|
entity |
| Predicate | instanceOf |
P0
|
FINISHED |
| Object | railway signaling system |
C3559
|
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: railway signaling system Context triple: [Positive Train Control, instanceOf, railway signaling system]
-
A.
rail transit
Rail transit is a public transportation system that moves passengers or freight along fixed steel tracks using trains, subways, trams, or light rail vehicles, typically in urban or intercity corridors.
-
B.
streetcar system
A streetcar system is an urban public transit network that operates rail vehicles on fixed tracks, typically embedded in city streets, to transport passengers along defined routes.
-
C.
elevated railway
An elevated railway is a rail transport system in which tracks and stations are built on raised structures above ground level, typically supported by columns or girders, to avoid interference with street traffic.
-
D.
commuter rail station
A commuter rail station is a designated facility where passengers board and alight regional trains that connect suburbs or outlying areas with urban centers, typically offering platforms, ticketing, and basic passenger amenities.
-
E.
commuter rail line
A commuter rail line is a passenger train service that operates on fixed tracks and schedules to connect suburban or outlying areas with a central city, primarily serving daily work and school commuters.
- F. None of above. chosen
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_69a2575cb1dc8190a01ad332426dc339 |
completed | Feb. 28, 2026, 2:47 a.m. |
Created at: Feb. 28, 2026, 2:52 a.m.