National highways of Japan
E456771
The national highways of Japan are a nationwide network of major roads that connect cities, towns, and regions across the country, supporting both long-distance travel and freight transport.
All labels observed (7)
How this entity was disambiguated
This entity first appeared as the object of triple T4638736 — 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: National highways of Japan Context triple: [Ebetsu, roadNetwork, National highways of Japan]
-
A.
Honshū expressway network
The Honshū expressway network is an extensive system of high-speed toll expressways that connects major cities and regions across Japan’s largest island, Honshū.
-
B.
Tohoku Expressway
The Tohoku Expressway is a major Japanese toll highway that runs north from the Tokyo area through several prefectures toward the Tohoku region, serving as one of the country’s primary north–south transportation arteries.
-
C.
Seto-Chuo Expressway
The Seto-Chuo Expressway is a major Japanese expressway that forms part of the road network crossing the Seto Inland Sea via the Seto Ohashi Bridge system, linking Honshu and Shikoku.
-
D.
Higashi-Kanto Expressway
The Higashi-Kanto Expressway is a major Japanese expressway in the Kanto region that connects the Tokyo area with Chiba Prefecture and serves as a key route to Narita International Airport.
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E.
Nishi-Meihan Expressway
Nishi-Meihan Expressway is a major expressway in Japan’s Kansai region that connects parts of Osaka and Nara Prefectures, serving as an important route for regional traffic and logistics.
- 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: National highways of Japan Target entity description: The national highways of Japan are a nationwide network of major roads that connect cities, towns, and regions across the country, supporting both long-distance travel and freight transport.
-
A.
Honshū expressway network
The Honshū expressway network is an extensive system of high-speed toll expressways that connects major cities and regions across Japan’s largest island, Honshū.
-
B.
Tohoku Expressway
The Tohoku Expressway is a major Japanese toll highway that runs north from the Tokyo area through several prefectures toward the Tohoku region, serving as one of the country’s primary north–south transportation arteries.
-
C.
Seto-Chuo Expressway
The Seto-Chuo Expressway is a major Japanese expressway that forms part of the road network crossing the Seto Inland Sea via the Seto Ohashi Bridge system, linking Honshu and Shikoku.
-
D.
Higashi-Kanto Expressway
The Higashi-Kanto Expressway is a major Japanese expressway in the Kanto region that connects the Tokyo area with Chiba Prefecture and serves as a key route to Narita International Airport.
-
E.
Nishi-Meihan Expressway
Nishi-Meihan Expressway is a major expressway in Japan’s Kansai region that connects parts of Osaka and Nara Prefectures, serving as an important route for regional traffic and logistics.
- F. None of above. chosen
Statements (59)
| Predicate | Object |
|---|---|
| instanceOf |
road network
ⓘ
transport infrastructure ⓘ |
| abbreviation |
R (for Route)
ⓘ
国道 ⓘ |
| administeredBy | Ministry of Land, Infrastructure, Transport and Tourism NERFINISHED ⓘ |
| alsoKnownAs |
Japanese national routes
ⓘ
Kokudō NERFINISHED ⓘ |
| classification |
Class 1 national highways
ⓘ
Class 2 national highways ⓘ general national highways ⓘ high-standard highways ⓘ |
| connects |
airports in Japan
ⓘ
major cities of Japan ⓘ ports in Japan ⓘ regional centers of Japan ⓘ |
| country | Japan ⓘ |
| distinguishedFrom | expressways of Japan ⓘ |
| hasFeature |
directional guide signs
ⓘ
numbered route markers ⓘ rural two-lane sections ⓘ urban arterial sections ⓘ |
| hasRouteNumberRange | 1–507 ⓘ |
| includes |
Japan National Route 1
NERFINISHED
ⓘ
Japan National Route 101 NERFINISHED ⓘ Japan National Route 16 NERFINISHED ⓘ Japan National Route 24 NERFINISHED ⓘ Japan National Route 246 NERFINISHED ⓘ Japan National Route 3 NERFINISHED ⓘ Japan National Route 4 NERFINISHED ⓘ Japan National Route 43 NERFINISHED ⓘ Japan National Route 5 NERFINISHED ⓘ Japan National Route 57 NERFINISHED ⓘ Japan National Route 58 NERFINISHED ⓘ Japan National Route 9 NERFINISHED ⓘ |
| introduced | 1952 national highway system reorganization ⓘ |
| legalBasis | Road Act of Japan NERFINISHED ⓘ |
| maintainedBy |
national government of Japan
ⓘ
prefectural governments of Japan ⓘ |
| mayInclude | toll sections on high-standard segments ⓘ |
| networkCoverage |
Hokkaidō
NERFINISHED
ⓘ
Honshū NERFINISHED ⓘ Kyūshū NERFINISHED ⓘ Okinawa Prefecture NERFINISHED ⓘ Shikoku NERFINISHED ⓘ |
| partOf | Japan road network NERFINISHED ⓘ |
| purpose |
freight transport
ⓘ
intercity connection ⓘ long-distance travel ⓘ |
| regulates |
maximum speed limits
ⓘ
vehicle weight limits ⓘ |
| role | backbone of surface transport in Japan ⓘ |
| signColor | blue ⓘ |
| signFeature | route number only ⓘ |
| signShape | shield ⓘ |
| signTextColor | white ⓘ |
| tollPolicy | generally toll-free ⓘ |
| trafficType |
buses
ⓘ
freight trucks ⓘ 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: National highways of Japan Description of subject: The national highways of Japan are a nationwide network of major roads that connect cities, towns, and regions across the country, supporting both long-distance travel and freight transport.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Ebetsu
subject surface form:
Taira, Iwaki, Fukushima, Japan
this entity surface form:
Japanese national highway system
this entity surface form:
Japan National Route network
this entity surface form:
Japan national road network
this entity surface form:
connected by national highways to Naha
this entity surface form:
Japan National Route authorities
this entity surface form:
National highways of Japan network