Usui Pass tunnel system
E711348
The Usui Pass tunnel system is a series of long railway tunnels in Japan that carry high-speed Shinkansen trains through the mountainous Usui Pass region.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Usui Pass tunnel system canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8089755 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Usui Pass tunnel system Context triple: [Hokuriku Shinkansen, notableStructure, Usui Pass tunnel system]
-
A.
Kanmon Tunnel
The Kanmon Tunnel is an undersea railway and road tunnel in Japan that links the islands of Honshu and Kyushu beneath the Kanmon Straits.
-
B.
Furka Base Tunnel
The Furka Base Tunnel is a long railway tunnel in the Swiss Alps that provides an all-weather, low-level route beneath the Furka Pass, improving connectivity and reliability on the Matterhorn Gotthard Bahn line.
-
C.
Seto Ohashi Bridge system
The Seto Ohashi Bridge system is a series of double-deck road-and-rail suspension and cable-stayed bridges in Japan that spans the Seto Inland Sea, linking the islands of Honshu and Shikoku.
-
D.
Kaichu-doro causeway
The Kaichu-doro causeway is a scenic marine roadway in Okinawa that connects the main island to several offshore islands by traversing shallow, turquoise coastal waters.
-
E.
Ohashi
Ohashi is a neighborhood within Tokyo’s Meguro ward, known as a residential area with convenient urban access.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Usui Pass tunnel system Target entity description: The Usui Pass tunnel system is a series of long railway tunnels in Japan that carry high-speed Shinkansen trains through the mountainous Usui Pass region.
-
A.
Kanmon Tunnel
The Kanmon Tunnel is an undersea railway and road tunnel in Japan that links the islands of Honshu and Kyushu beneath the Kanmon Straits.
-
B.
Furka Base Tunnel
The Furka Base Tunnel is a long railway tunnel in the Swiss Alps that provides an all-weather, low-level route beneath the Furka Pass, improving connectivity and reliability on the Matterhorn Gotthard Bahn line.
-
C.
Seto Ohashi Bridge system
The Seto Ohashi Bridge system is a series of double-deck road-and-rail suspension and cable-stayed bridges in Japan that spans the Seto Inland Sea, linking the islands of Honshu and Shikoku.
-
D.
Kaichu-doro causeway
The Kaichu-doro causeway is a scenic marine roadway in Okinawa that connects the main island to several offshore islands by traversing shallow, turquoise coastal waters.
-
E.
Ohashi
Ohashi is a neighborhood within Tokyo’s Meguro ward, known as a residential area with convenient urban access.
- F. None of above. chosen
Statements (28)
| Predicate | Object |
|---|---|
| instanceOf |
railway infrastructure
ⓘ
railway tunnel system ⓘ |
| connectsRegion |
Chubu region
NERFINISHED
ⓘ
Kanto region NERFINISHED ⓘ |
| constructionType | bored tunnel ⓘ |
| country | Japan ⓘ |
| crosses | border between Gunma Prefecture and Nagano Prefecture ⓘ |
| designedFor | high-speed operation ⓘ |
| electrification | overhead catenary ⓘ |
| gauge | 1,435 mm standard gauge ⓘ |
| locatedIn |
Gunma Prefecture
NERFINISHED
ⓘ
Honshu ⓘ Nagano Prefecture NERFINISHED ⓘ Usui Pass NERFINISHED ⓘ |
| operator | East Japan Railway Company NERFINISHED ⓘ |
| owner | East Japan Railway Company NERFINISHED ⓘ |
| partOf |
Hokuriku Shinkansen
NERFINISHED
ⓘ
Shinkansen network NERFINISHED ⓘ rail transport infrastructure of Japan ⓘ |
| passesThrough | mountainous terrain ⓘ |
| purpose | to carry high-speed trains through the Usui Pass region ⓘ |
| railwayLineType | high-speed rail ⓘ |
| safetyFeature |
emergency exits
ⓘ
fire protection system ⓘ ventilation system ⓘ |
| terrainType | mountain pass ⓘ |
| trackConfiguration | double track ⓘ |
| usedBy | Shinkansen trains NERFINISHED ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Usui Pass tunnel system Description of subject: The Usui Pass tunnel system is a series of long railway tunnels in Japan that carry high-speed Shinkansen trains through the mountainous Usui Pass region.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.