Toei Asakusa Line
E363338
The Toei Asakusa Line is a major Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central Tokyo with surrounding areas and offering through-services to several private railway lines.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Toei Asakusa Line canonical | 10 |
| A-20 (Toei Asakusa Line) | 1 |
| Asakusa Line | 1 |
| Toei Asakusa Line (through service) | 1 |
| Tōei Asakusa Line | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1640758 — 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 Asakusa Line Context triple: [Toei Subway, hasLine, Toei Asakusa Line]
-
A.
Toei Oedo Line
The Toei Oedo Line is a major Tokyo subway loop and radial line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central districts with many key commercial and residential areas.
-
B.
Toei Shinjuku Line
The Toei Shinjuku Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running east–west across the city and connecting central Tokyo with its eastern suburbs.
-
C.
Tokyu Meguro Line
The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
-
D.
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.
-
E.
Tokyo Metro Marunouchi Line
The Tokyo Metro Marunouchi Line is one of Tokyo’s main subway lines, running in a loop-like route through central districts and connecting major hubs such as Shinjuku, Tokyo, and Ikebukuro.
- 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 Asakusa Line Target entity description: The Toei Asakusa Line is a major Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central Tokyo with surrounding areas and offering through-services to several private railway lines.
-
A.
Toei Oedo Line
The Toei Oedo Line is a major Tokyo subway loop and radial line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central districts with many key commercial and residential areas.
-
B.
Toei Shinjuku Line
The Toei Shinjuku Line is a Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, running east–west across the city and connecting central Tokyo with its eastern suburbs.
-
C.
Tokyu Meguro Line
The Tokyu Meguro Line is a commuter railway line in Tokyo and Kanagawa operated by Tokyu Corporation, linking central Tokyo with its southwestern suburbs and offering through services onto various subway and other private railway lines.
-
D.
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.
-
E.
Tokyo Metro Marunouchi Line
The Tokyo Metro Marunouchi Line is one of Tokyo’s main subway lines, running in a loop-like route through central districts and connecting major hubs such as Shinjuku, Tokyo, and Ikebukuro.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
railway line
ⓘ
subway line ⓘ |
| characteristic |
first subway line in Japan to offer extensive through-services with private railways
ⓘ
forms part of a continuous corridor between Haneda Airport and Narita Airport ⓘ |
| connectsTo |
Haneda Airport via Keikyu lines
ⓘ
Narita Airport via Keisei and Narita Sky Access lines ⓘ |
| country | Japan ⓘ |
| depot | Magome Depot ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| formerName | Toei Line 1 NERFINISHED ⓘ |
| gauge | 1,435 mm ⓘ |
| interchangeWith |
JR East lines at multiple stations
ⓘ
Toei Mita Line NERFINISHED ⓘ Toei Oedo Line NERFINISHED ⓘ Toei Shinjuku Line NERFINISHED ⓘ Tokyo Metro Asakusa Line (other lines in network) is not applicable ⓘ Tokyo Metro Ginza Line NERFINISHED ⓘ Yamanote Line at Shinagawa via Keikyu connection ⓘ |
| lineColor |
pink
ⓘ
rose ⓘ |
| lineSymbol | A ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| network |
Toei Subway
ⓘ
surface form:
Toei Subway network
|
| numberOfStations | 20 ⓘ |
| openingDate | 1960-12-04 ⓘ |
| operator |
Toei Subway
ⓘ
Tokyo Metropolitan Bureau of Transportation ⓘ |
| partOf |
Tokyo metropolitan rail network
ⓘ
surface form:
Tokyo subway system
|
| rollingStock |
Toei 5300 series (historical)
ⓘ
Toei 5500 series ⓘ |
| servesDistrict |
Chuo
ⓘ
Minato NERFINISHED ⓘ Sumida River area ⓘ
surface form:
Oshiage area of Sumida
Ota ⓘ Shinagawa NERFINISHED ⓘ Taitō ⓘ
surface form:
Taito
|
| servicePattern |
local services
ⓘ
rapid services via through-running sections ⓘ |
| terminus |
Nishi-Magome Station
NERFINISHED
ⓘ
Oshiage Station NERFINISHED ⓘ |
| throughServiceWith |
Hokuso Line
NERFINISHED
ⓘ
Keikyu Airport Line NERFINISHED ⓘ Keikyu Main Line NERFINISHED ⓘ Keisei Main Line NERFINISHED ⓘ Narita International Airport rail access system ⓘ
surface form:
Keisei Narita Sky Access Line
Keisei Oshiage Line NERFINISHED ⓘ |
| trackGauge | standard gauge ⓘ |
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 Asakusa Line Description of subject: The Toei Asakusa Line is a major Tokyo subway line operated by the Tokyo Metropolitan Bureau of Transportation, connecting central Tokyo with surrounding areas and offering through-services to several private railway lines.
Referenced by (14)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Asakusa Line
this entity surface form:
Tōei Asakusa Line
subject surface form:
Toei Asakusa Line Nihonbashi Station
subject surface form:
Ōta, Tokyo
this entity surface form:
Toei Asakusa Line (through service)
subject surface form:
Oshiage Station (Toei Asakusa Line)
this entity surface form:
A-20 (Toei Asakusa Line)
subject surface form:
Sengaku-ji