Toei Subway
E35464
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.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Toei Subway canonical | 27 |
| Toei Subway network | 9 |
| Toei 12 Line | 1 |
| Toei Subway fare system | 1 |
| Toei Subway lines | 1 |
| Tokyo subway | 1 |
| 都営地下鉄 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T262061 — 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: Toei Subway Context triple: [Tokyo, hasMetroSystem, Toei Subway]
-
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.
Tokyo Metro Fukutoshin Line
The Tokyo Metro Fukutoshin Line is a major Tokyo subway line running north–south through central and suburban areas, connecting key hubs such as Shibuya with other important districts.
-
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.
Tokyu Toyoko Line
The Tokyu Toyoko Line is a major private railway line in the Tokyo–Yokohama area that connects central Tokyo with Yokohama and links to multiple subway and intercity rail services.
-
E.
Tokyo Metro Ginza Line
The Tokyo Metro Ginza Line is one of Tokyo’s oldest and most central subway lines, running east–west through major commercial and business districts including Shibuya and Ginza.
- 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: Toei Subway Target entity description: 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.
-
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.
Tokyo Metro Fukutoshin Line
The Tokyo Metro Fukutoshin Line is a major Tokyo subway line running north–south through central and suburban areas, connecting key hubs such as Shibuya with other important districts.
-
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.
Tokyu Toyoko Line
The Tokyu Toyoko Line is a major private railway line in the Tokyo–Yokohama area that connects central Tokyo with Yokohama and links to multiple subway and intercity rail services.
-
E.
Tokyo Metro Ginza Line
The Tokyo Metro Ginza Line is one of Tokyo’s oldest and most central subway lines, running east–west through major commercial and business districts including Shibuya and Ginza.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
public transport network
ⓘ
subway system ⓘ |
| branding |
Toei Transportation
ⓘ
linked to:
Tokyo Metropolitan Bureau of Transportation
|
| connectsWith |
JR East lines
ⓘ
linked to:
JR East urban network
Tokyo Metro lines ⓘ
linked to:
Tokyo Metro
private railway lines in Greater Tokyo ⓘ |
| country | Japan ⓘ |
| electrification | overhead catenary ⓘ |
| fareIntegration | partial through IC cards such as Suica and PASMO ⓘ |
| fareMedium |
PASMO
ⓘ
Suica ⓘ |
| fareSystem | separate from Tokyo Metro ⓘ |
| hasFeature |
barrier-free access at many stations
ⓘ
numbered stations ⓘ |
| hasLine |
Asakusa Line
ⓘ
linked to:
Toei Asakusa Line
Mita Line ⓘ Oedo Line ⓘ
linked to:
Toei Oedo Line
Shinjuku Line ⓘ
linked to:
Toei Shinjuku Line
Toei Asakusa Line ⓘ Toei Mita Line ⓘ Toei Oedo Line ⓘ Toei Shinjuku Line ⓘ |
| headquartersLocation | Tokyo ⓘ |
| languageOfSignage |
Chinese
ⓘ
English ⓘ Japanese ⓘ Korean ⓘ |
| lineColorSystem | distinct color for each line ⓘ |
| locatedIn | Tokyo ⓘ |
| numberOfLines | 4 ⓘ |
| offers | women-only cars on some services ⓘ |
| oneOf | two main subway systems in Tokyo ⓘ |
| operator | Tokyo Metropolitan Bureau of Transportation ⓘ |
| owner | Tokyo Metropolitan Government ⓘ |
| ownerType | municipal government ⓘ |
| partOf | Tokyo public transportation network ⓘ |
| rollingStockType | electric multiple units ⓘ |
| safetySystem | automatic train control on most lines ⓘ |
| serviceArea |
central Tokyo
ⓘ
suburban areas of Tokyo ⓘ |
| serviceType |
rapid transit
ⓘ
through services onto other railways on some lines ⓘ |
| sisterNetwork | Tokyo Metro ⓘ |
| ticketing |
accepts IC cards
ⓘ
offers paper tickets ⓘ |
| trackGauge |
narrow gauge on some lines
ⓘ
standard gauge on some lines ⓘ |
| zone |
Greater Tokyo Area
ⓘ
linked to:
Tokyo metropolitan area
|
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: Toei Subway Description of subject: 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.
Referenced by (41)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Toei Subway
subject linked to:
Toei Asakusa Line at Nihonbashi
subject linked to:
Toei Asakusa Line at Nihonbashi
linked to: Toei Subway
subject linked to:
Toei Mita Line at Otemachi
subject linked to:
Toei Asakusa Line at Oshiage
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway
linked to: Toei Subway