Tokyo metropolitan rail network
E173398
The Tokyo metropolitan rail network is an extensive, high-frequency urban and suburban railway system in Greater Tokyo, renowned for its punctuality, complexity, and integration of multiple private and public rail operators.
All labels observed (13)
How this entity was disambiguated
This entity first appeared as the object of triple T1195454 — 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: Tokyo metropolitan rail network Context triple: [Shibuya Station, partOfTransportNetwork, Tokyo metropolitan rail network]
-
A.
Tokyo Metro
Tokyo Metro is one of the two main rapid transit operators in Tokyo, running an extensive network of subway lines that serve the city’s central and metropolitan areas.
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B.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
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C.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
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D.
Kyoto Municipal Subway
The Kyoto Municipal Subway is an urban rapid transit system serving Kyoto, Japan, providing key north–south and east–west rail connections across the city.
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E.
Chuo Line
The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
- 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: Tokyo metropolitan rail network Target entity description: The Tokyo metropolitan rail network is an extensive, high-frequency urban and suburban railway system in Greater Tokyo, renowned for its punctuality, complexity, and integration of multiple private and public rail operators.
-
A.
Tokyo Metro
Tokyo Metro is one of the two main rapid transit operators in Tokyo, running an extensive network of subway lines that serve the city’s central and metropolitan areas.
-
B.
Toei Subway
Toei Subway is one of Tokyo's two main subway networks, operated by the Tokyo Metropolitan Bureau of Transportation and serving numerous urban and suburban areas across the city.
-
C.
Tokyu Den-en-toshi Line
Tokyu Den-en-toshi Line is a major private railway line in the Tokyo metropolitan area that connects central Tokyo with suburban residential districts, including service to Shibuya.
-
D.
Kyoto Municipal Subway
The Kyoto Municipal Subway is an urban rapid transit system serving Kyoto, Japan, providing key north–south and east–west rail connections across the city.
-
E.
Chuo Line
The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail network
ⓘ
public transport system ⓘ urban rail network ⓘ |
| connectsTo |
Haneda Airport
ⓘ
Narita International Airport ⓘ |
| hasCharacteristic |
dense network coverage
ⓘ
high frequency ⓘ high passenger volume ⓘ high punctuality ⓘ multi-operator integration ⓘ operational complexity ⓘ |
| hasHub |
Ikebukuro Station
ⓘ
Shibuya Station ⓘ Shinagawa Station ⓘ Shinjuku Station ⓘ Tokyo Station ⓘ Ueno Station ⓘ Yokohama Station ⓘ |
| includes |
JR East lines in Greater Tokyo
ⓘ
Keikyu Corporation lines ⓘ Keio Corporation lines ⓘ Keisei Electric Railway lines ⓘ Odakyu Electric Railway ⓘ
surface form:
Odakyu Electric Railway lines
Rinkai Line NERFINISHED ⓘ Seibu Railway ⓘ
surface form:
Seibu Railway lines
Tama Monorail ⓘ Tobu Railway ⓘ
surface form:
Tobu Railway lines
Toei Subway ⓘ Tokyo Metro ⓘ Tokyo Monorail ⓘ Tokyu Corporation lines ⓘ Tsukuba Express ⓘ Yurikamome line NERFINISHED ⓘ |
| locatedIn |
Tokyo metropolitan area
ⓘ
surface form:
Greater Tokyo Area
Japan ⓘ |
| operatedBy |
East Japan Railway Company
ⓘ
Teito Rapid Transit Authority ⓘ
surface form:
Tokyo Metro Co., Ltd.
Tokyo Metropolitan Bureau of Transportation ⓘ |
| serves |
Chiba
ⓘ
Kawasaki ⓘ Saitama (city) ⓘ
surface form:
Saitama
Tokyo ⓘ Yokohama ⓘ |
| supportsService |
express trains
ⓘ
limited express trains ⓘ local trains ⓘ through services between different operators ⓘ |
| usesTicketingSystem |
IC card
ⓘ
PASMO ⓘ Suica ⓘ |
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: Tokyo metropolitan rail network Description of subject: The Tokyo metropolitan rail network is an extensive, high-frequency urban and suburban railway system in Greater Tokyo, renowned for its punctuality, complexity, and integration of multiple private and public rail operators.
Referenced by (23)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Tokyo subway
this entity surface form:
Tokyo subway
this entity surface form:
Tokyo subway network
this entity surface form:
Greater Tokyo rail network
this entity surface form:
Tokyo urban rail network
this entity surface form:
Tokyo urban rail network
this entity surface form:
Tokyo rail network
this entity surface form:
Tokyo rail transport system
this entity surface form:
Tokyo urban rail network
this entity surface form:
Tokyo urban rail network
this entity surface form:
Tokyo metropolitan transport network
this entity surface form:
Tokyo urban rail network
this entity surface form:
Tokyo urban rail network
this entity surface form:
Tokyo metropolitan commuter rail network
this entity surface form:
Tokyo metropolitan transportation system
this entity surface form:
Tokyo Metro network infrastructure
this entity surface form:
Tokyo subway system
this entity surface form:
Tokyo metropolitan railway network
this entity surface form:
Tokyo metropolitan commuter rail network