Seto Ohashi Bridge
E346961
The Seto Ohashi Bridge is a massive series of double-deck bridges in Japan that carries both road and rail traffic across the Seto Inland Sea between Honshu and Shikoku.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Seto Ohashi Bridge canonical | 8 |
| Seto Ohashi | 2 |
| Honshu–Shikoku Bridge Project | 1 |
| Minami Bisan-Seto Bridge | 1 |
| Seto Ōhashi | 1 |
| Seto-Ōhashi Bridge | 1 |
| Shimotsui-Seto Bridge | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3310519 — 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: Seto Ohashi Bridge Context triple: [Western Japan, connectedBy, Seto Ohashi Bridge]
-
A.
Akashi Kaikyo Bridge
The Akashi Kaikyo Bridge is a record-breaking suspension bridge in Japan that spans the Akashi Strait, connecting Kobe on Honshu with Awaji Island.
-
B.
Ikema Ohashi Bridge
Ikema Ohashi Bridge is a scenic long-span bridge in Okinawa Prefecture, Japan, known for connecting Miyako-jima and Ikema-jima across strikingly clear turquoise waters.
-
C.
Irabu Ohashi Bridge
Irabu Ohashi Bridge is a long sea-crossing bridge in Okinawa Prefecture, Japan, known for connecting Miyako-jima and Irabu-jima and offering scenic views over clear blue waters.
-
D.
Yokohama Bay Bridge
Yokohama Bay Bridge is a prominent cable-stayed bridge in Yokohama, Japan, known for its striking night illumination and panoramic views over Tokyo Bay.
-
E.
Togetsukyo Bridge
Togetsukyo Bridge is a historic and scenic wooden bridge in Kyoto’s Arashiyama district, famous for its picturesque views of seasonal foliage and cherry blossoms.
- 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: Seto Ohashi Bridge Target entity description: The Seto Ohashi Bridge is a massive series of double-deck bridges in Japan that carries both road and rail traffic across the Seto Inland Sea between Honshu and Shikoku.
-
A.
Akashi Kaikyo Bridge
The Akashi Kaikyo Bridge is a record-breaking suspension bridge in Japan that spans the Akashi Strait, connecting Kobe on Honshu with Awaji Island.
-
B.
Ikema Ohashi Bridge
Ikema Ohashi Bridge is a scenic long-span bridge in Okinawa Prefecture, Japan, known for connecting Miyako-jima and Ikema-jima across strikingly clear turquoise waters.
-
C.
Irabu Ohashi Bridge
Irabu Ohashi Bridge is a long sea-crossing bridge in Okinawa Prefecture, Japan, known for connecting Miyako-jima and Irabu-jima and offering scenic views over clear blue waters.
-
D.
Yokohama Bay Bridge
Yokohama Bay Bridge is a prominent cable-stayed bridge in Yokohama, Japan, known for its striking night illumination and panoramic views over Tokyo Bay.
-
E.
Togetsukyo Bridge
Togetsukyo Bridge is a historic and scenic wooden bridge in Kyoto’s Arashiyama district, famous for its picturesque views of seasonal foliage and cherry blossoms.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
bridge system
ⓘ
double-deck bridge ⓘ road–rail bridge ⓘ |
| alsoKnownAs | Great Seto Bridge ⓘ |
| carries |
rail traffic
ⓘ
road traffic ⓘ |
| carriesRail |
Honshi-Bisan Line
NERFINISHED
ⓘ
Seto-Ōhashi Line NERFINISHED ⓘ |
| carriesRoad |
Seto-Chūō Expressway
ⓘ
linked to:
Seto-Chuo Expressway
|
| connects |
Honshu
ⓘ
Shikoku ⓘ |
| connectsCity |
Kurashiki
NERFINISHED
ⓘ
Sakaide NERFINISHED ⓘ |
| constructionStart | 1978 ⓘ |
| country | Japan ⓘ |
| crosses | Seto Inland Sea ⓘ |
| designType |
cable-stayed bridge
ⓘ
suspension bridge ⓘ truss bridge ⓘ |
| hasDecks | 2 ⓘ |
| hasFeature |
double-deck structure
ⓘ
multiple main spans ⓘ |
| heightRestrictionRoad | about 4.5 m ⓘ |
| locatedIn |
Kagawa Prefecture
NERFINISHED
ⓘ
Okayama Prefecture NERFINISHED ⓘ |
| locatedOnStrait |
Seto Inland Sea channels between Okayama and Kagawa
ⓘ
linked to:
Seto Inland Sea
|
| lowerDeckUsedFor | railway ⓘ |
| mainSpanLength | about 1,100 m ⓘ |
| maintainedBy | Honshu-Shikoku Bridge Expressway Company ⓘ |
| materialsUsed |
concrete
ⓘ
steel ⓘ |
| notableFor | linking Honshu and Shikoku by both road and rail ⓘ |
| numberOfBridges | 6 ⓘ |
| opened | 1988-04-10 ⓘ |
| openedToRailTraffic | 1988 ⓘ |
| openedToRoadTraffic | 1988 ⓘ |
| partOf |
Honshū–Shikoku Bridge Project
ⓘ
linked to:
Honshu–Shikoku Bridge Project
|
| partOfTransportCorridor |
Honshu–Shikoku road and rail link
ⓘ
linked to:
Honshu–Shikoku corridor
|
| passesThrough | Great Seto Bridge route ⓘ |
| railGauge |
narrow gauge
ⓘ
standard gauge ⓘ |
| railwayOperator |
JR Shikoku
ⓘ
JR West ⓘ |
| region |
Seto Inland Sea region
ⓘ
linked to:
Seto Inland Sea
|
| toll | yes ⓘ |
| totalLength | about 13.1 km ⓘ |
| upperDeckUsedFor | motor vehicles ⓘ |
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: Seto Ohashi Bridge Description of subject: The Seto Ohashi Bridge is a massive series of double-deck bridges in Japan that carries both road and rail traffic across the Seto Inland Sea between Honshu and Shikoku.
Referenced by (15)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
western Japan
linked to: Seto Ohashi Bridge
linked to: Seto Ohashi Bridge
linked to: Seto Ohashi Bridge
linked to: Seto Ohashi Bridge
linked to: Seto Ohashi Bridge
linked to: Seto Ohashi Bridge
linked to: Seto Ohashi Bridge