Triple
T4047916
| Position | Surface form | Disambiguated ID | Type / Status |
|---|---|---|---|
| Subject | Transbay Tube |
E84112
|
entity |
| Predicate | instanceOf |
P0
|
FINISHED |
| Object | underwater rail tunnel |
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: underwater rail tunnel Context triple: [Transbay Tube, instanceOf, underwater rail tunnel]
-
A.
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.
-
B.
transportation tunnel
A transportation tunnel is an underground or enclosed passageway designed to allow vehicles, trains, or pedestrians to travel safely through or beneath natural or man-made obstacles.
-
C.
road tunnel
A road tunnel is an underground or enclosed passageway constructed to allow vehicular traffic to pass through obstacles such as mountains, hills, or urban areas while maintaining a continuous roadway.
-
D.
water supply tunnel
A water supply tunnel is an underground passage constructed to convey water from its source to treatment facilities, storage reservoirs, or distribution networks, often over long distances and through challenging terrain.
-
E.
combined road and rail bridge–tunnel
A combined road and rail bridge–tunnel is a hybrid transportation structure that integrates both bridge and tunnel segments to carry vehicular and rail traffic across or under a geographic obstacle such as a body of water or valley.
- 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_69aed930bd5c819083e7dcc14fc44f69 |
completed | March 9, 2026, 2:29 p.m. |
Created at: March 9, 2026, 3:37 p.m.