NEXCO Central Japan
E252307
NEXCO Central Japan is a major Japanese expressway company responsible for operating and maintaining toll roads and related infrastructure in the central region of Japan.
All labels observed (2)
| Label | Occurrences |
|---|---|
| NEXCO Central Japan canonical | 7 |
| NEXCO Central | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2284921 — 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: NEXCO Central Japan Context triple: [Meishin Expressway, operator, NEXCO Central Japan]
-
A.
Central Japan Railway Company
Central Japan Railway Company is a major Japanese railway operator best known for running the Tokaido Shinkansen high-speed rail line connecting Tokyo, Nagoya, and Osaka.
-
B.
Kinki Sharyo
Kinki Sharyo is a Japanese manufacturer specializing in the design and production of railway vehicles, including metro and light rail trains used in systems worldwide.
-
C.
West Japan Railway Company
West Japan Railway Company is one of Japan’s major regional railway operators, managing extensive rail networks across western Honshu including the Kansai area.
-
D.
Odakyu Electric Railway
Odakyu Electric Railway is a major private railway company in Japan that operates commuter and limited express train services connecting central Tokyo with surrounding suburban and regional areas.
-
E.
East Japan Railway Company
East Japan Railway Company is a major Japanese railway operator that runs an extensive network of commuter and high-speed train services across eastern Honshu, including the Tokyo metropolitan area.
- 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: NEXCO Central Japan Target entity description: NEXCO Central Japan is a major Japanese expressway company responsible for operating and maintaining toll roads and related infrastructure in the central region of Japan.
-
A.
Central Japan Railway Company
Central Japan Railway Company is a major Japanese railway operator best known for running the Tokaido Shinkansen high-speed rail line connecting Tokyo, Nagoya, and Osaka.
-
B.
Kinki Sharyo
Kinki Sharyo is a Japanese manufacturer specializing in the design and production of railway vehicles, including metro and light rail trains used in systems worldwide.
-
C.
West Japan Railway Company
West Japan Railway Company is one of Japan’s major regional railway operators, managing extensive rail networks across western Honshu including the Kansai area.
-
D.
Odakyu Electric Railway
Odakyu Electric Railway is a major private railway company in Japan that operates commuter and limited express train services connecting central Tokyo with surrounding suburban and regional areas.
-
E.
East Japan Railway Company
East Japan Railway Company is a major Japanese railway operator that runs an extensive network of commuter and high-speed train services across eastern Honshu, including the Tokyo metropolitan area.
- F. None of above. chosen
Statements (38)
| Predicate | Object |
|---|---|
| instanceOf |
Japanese company
ⓘ
expressway company ⓘ toll road operator ⓘ |
| abbreviation |
NEXCO Central Japan
self-linksurface differs
ⓘ
surface form:
NEXCO Central
|
| alsoKnownAs |
Nippon Expressway Company Group
ⓘ
surface form:
Central Nippon Expressway Company
|
| businessActivity |
maintenance of expressways
ⓘ
management of parking areas ⓘ management of service areas ⓘ operation of toll roads ⓘ road infrastructure development ⓘ |
| country | Japan ⓘ |
| focus |
regional transportation infrastructure development
ⓘ
safe and efficient expressway operation ⓘ |
| foundedAsPartOf | privatization of Japan Highway Public Corporation ⓘ |
| headquartersCountry | Japan ⓘ |
| headquartersLocation | Nagoya ⓘ |
| industry |
expressway operation
ⓘ
road infrastructure management ⓘ |
| legalForm | joint-stock company ⓘ |
| operatesInfrastructureType |
bridges
ⓘ
expressways ⓘ roadside service areas ⓘ toll roads ⓘ tunnels ⓘ |
| operatesInRegion | central Japan ⓘ |
| parentOrganization | Nippon Expressway Company Group ⓘ |
| regulatesWith | Japanese national expressway laws ⓘ |
| responsibility |
disaster response on expressways
ⓘ
expressway maintenance ⓘ safety management on expressways ⓘ toll collection ⓘ traffic management on expressways ⓘ |
| sector |
infrastructure
ⓘ
transportation ⓘ |
| serviceArea |
Chūbu region
ⓘ
Hokuriku region ⓘ Chūbu region ⓘ
surface form:
Kōshin’etsu region
|
| usesSystem | electronic toll collection ⓘ |
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: NEXCO Central Japan Description of subject: NEXCO Central Japan is a major Japanese expressway company responsible for operating and maintaining toll roads and related infrastructure in the central region of Japan.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
NEXCO Central
this entity surface form:
NEXCO Central