Triple
T3939561
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Dearborn Street subway |
E92000
|
entity |
| Predicate | instanceOf |
P0
|
FINISHED |
| Object | underground railway infrastructure |
C5444
|
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: underground railway infrastructure Context triple: [Dearborn Street subway, instanceOf, underground railway infrastructure]
-
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.
public transportation infrastructure
Public transportation infrastructure encompasses the physical and organizational systems—such as buses, trains, stations, tracks, and supporting facilities—that enable the efficient movement of people via shared transit services.
-
C.
railway infrastructure element
A railway infrastructure element is any physical component of a rail system—such as tracks, signals, switches, bridges, or platforms—that supports the safe and efficient operation of trains.
-
D.
rail tunnel
chosen
A rail tunnel is an underground or enclosed passage constructed to allow trains to travel through obstacles such as mountains, hills, or urban areas while maintaining a continuous railway route.
-
E.
urban rail loop line
An urban rail loop line is a circular or near-circular transit route within a city that connects multiple districts and intersecting lines, allowing continuous, bidirectional travel without a terminal endpoint.
- 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_69aed965502c8190904ebad1203a4ae8 |
completed | March 9, 2026, 2:29 p.m. |
Created at: March 9, 2026, 3:24 p.m.