Metropolitan Expressway Company Limited
E827472
Metropolitan Expressway Company Limited is the public–private company responsible for managing, maintaining, and operating Tokyo’s urban expressway network.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Metropolitan Expressway Company Limited canonical | 22 |
| Metropolitan Expressway Company | 3 |
| Metropolitan Expressway Public Corporation | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T9888680 — 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: Metropolitan Expressway Company Limited Context triple: [Metropolitan Expressway (Tokyo), operatedBy, Metropolitan Expressway Company Limited]
-
A.
Hanshin Expressway Company Limited
Hanshin Expressway Company Limited is a Japanese company responsible for managing and operating the Hanshin Expressway network serving the Osaka–Kobe metropolitan area.
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B.
East Nippon Expressway Company
East Nippon Expressway Company is a major Japanese expressway operator responsible for managing and maintaining toll roads and related infrastructure in eastern Japan.
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C.
Honshu-Shikoku Bridge Expressway Company
Honshu-Shikoku Bridge Expressway Company is a Japanese expressway operator responsible for managing major bridge and highway links between the islands of Honshu and Shikoku.
-
D.
NEXCO West Japan
NEXCO West Japan is a major Japanese expressway company responsible for managing and operating toll roads and related infrastructure in the western regions of Japan.
-
E.
PASMO Co., Ltd.
PASMO Co., Ltd. is the company that manages and operates the PASMO rechargeable contactless smart card system used for public transportation and electronic payments in 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: Metropolitan Expressway Company Limited Target entity description: Metropolitan Expressway Company Limited is the public–private company responsible for managing, maintaining, and operating Tokyo’s urban expressway network.
-
A.
Hanshin Expressway Company Limited
Hanshin Expressway Company Limited is a Japanese company responsible for managing and operating the Hanshin Expressway network serving the Osaka–Kobe metropolitan area.
-
B.
East Nippon Expressway Company
East Nippon Expressway Company is a major Japanese expressway operator responsible for managing and maintaining toll roads and related infrastructure in eastern Japan.
-
C.
Honshu-Shikoku Bridge Expressway Company
Honshu-Shikoku Bridge Expressway Company is a Japanese expressway operator responsible for managing major bridge and highway links between the islands of Honshu and Shikoku.
-
D.
NEXCO West Japan
NEXCO West Japan is a major Japanese expressway company responsible for managing and operating toll roads and related infrastructure in the western regions of Japan.
-
E.
PASMO Co., Ltd.
PASMO Co., Ltd. is the company that manages and operates the PASMO rechargeable contactless smart card system used for public transportation and electronic payments in the Tokyo metropolitan area.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
expressway operating company
ⓘ
kabushiki gaisha ⓘ public–private company ⓘ |
| businessModel | toll road operator ⓘ |
| country | Japan ⓘ |
| focusesOn |
infrastructure renewal
ⓘ
road safety improvement ⓘ urban traffic congestion mitigation ⓘ |
| hasAbbreviation |
MEX
ⓘ
Shutokō company ⓘ |
| hasNetworkType | urban expressway ⓘ |
| hasOfficialLanguage | Japanese ⓘ |
| hasTollSystem | electronic toll collection ⓘ |
| hasWebsiteLanguage |
English
ⓘ
Japanese ⓘ |
| headquartersLocation | Tokyo ⓘ |
| industry |
expressway operation
ⓘ
infrastructure management ⓘ road transport ⓘ |
| legalForm | joint-stock company ⓘ |
| locatedInTimeZone | Japan Standard Time ⓘ |
| mainProduct | urban expressway services ⓘ |
| majorShareholderType |
Japanese national government
ⓘ
linked to:
Government of Japan
local governments ⓘ |
| operates | Shuto Expressway network ⓘ |
| operatesInAdministrativeTerritorialEntity |
Kanagawa Prefecture
ⓘ
Saitama Prefecture ⓘ Tokyo ⓘ |
| operatesInfrastructureType |
expressway
ⓘ
tunnels ⓘ viaducts ⓘ |
| ownershipStructure | mixed public–private ownership ⓘ |
| regulates | traffic management on Shuto Expressway ⓘ |
| responsibleFor |
bridge maintenance on Shuto Expressway
ⓘ
maintenance of Tokyo urban expressway network ⓘ management of Tokyo urban expressway network ⓘ operation of Tokyo urban expressway network ⓘ road maintenance on Shuto Expressway ⓘ road signage on Shuto Expressway ⓘ safety management on Shuto Expressway ⓘ traffic information services on Shuto Expressway ⓘ tunnel maintenance on Shuto Expressway ⓘ |
| serviceArea | Tokyo metropolitan area ⓘ |
| sharesBorderWithNetwork | East Nippon Expressway Company network ⓘ |
| usesTechnology | ETC (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: Metropolitan Expressway Company Limited Description of subject: Metropolitan Expressway Company Limited is the public–private company responsible for managing, maintaining, and operating Tokyo’s urban expressway network.
Referenced by (27)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Metropolitan Expressway Company Limited
subject linked to:
Bay Bridge
subject linked to:
Bay Bridge
linked to: Metropolitan Expressway Company Limited
linked to: Metropolitan Expressway Company Limited
Shuto Expressway Route 7 Komatsugawa Line
→
maintainedBy
→
Metropolitan Expressway Company Limited
ⓘ
linked to: Metropolitan Expressway Company Limited
linked to: Metropolitan Expressway Company Limited