Tozai Line
E394221
The Tozai Line is a major Tokyo Metro subway line that runs east–west across Tokyo, connecting central business districts with suburban residential areas.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tozai Line canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T1860671 — 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: Tozai Line Context triple: [Tokyo Metro, operatesLine, Tozai Line]
-
A.
Yotsubashi Line
The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
-
B.
Saikyō Line
The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
-
C.
Keio Line
The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
-
D.
Tanagawa Line
The Tanagawa Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers near the coastal area.
-
E.
Hibiya Line
The Hibiya Line is a major Tokyo Metro subway line in Tokyo, Japan, connecting key central districts and serving as an important commuter and transfer route.
- 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: Tozai Line Target entity description: The Tozai Line is a major Tokyo Metro subway line that runs east–west across Tokyo, connecting central business districts with suburban residential areas.
-
A.
Yotsubashi Line
The Yotsubashi Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and serving key north–south corridors through the city.
-
B.
Saikyō Line
The Saikyō Line is a major JR East railway line in the Tokyo metropolitan area that connects central Tokyo with Saitama Prefecture, serving as a key commuter route.
-
C.
Keio Line
The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
-
D.
Tanagawa Line
The Tanagawa Line is a short commuter railway line in Osaka Prefecture, Japan, operated by Nankai Electric Railway and serving local passengers near the coastal area.
-
E.
Hibiya Line
The Hibiya Line is a major Tokyo Metro subway line in Tokyo, Japan, connecting key central districts and serving as an important commuter and transfer route.
- F. None of above. chosen
Statements (66)
| Predicate | Object |
|---|---|
| instanceOf |
Tokyo Metro line
ⓘ
rapid transit line ⓘ |
| character |
at grade
ⓘ
elevated ⓘ underground ⓘ |
| connects |
central business districts of Tokyo
ⓘ
suburban residential areas east of Tokyo ⓘ |
| connectsWith |
JR Chuo-Sobu Line
NERFINISHED
ⓘ
JR Keiyo Line NERFINISHED ⓘ JR Sobu Line (Rapid) NERFINISHED ⓘ Toei Asakusa Line NERFINISHED ⓘ Toei Oedo Line NERFINISHED ⓘ Tokyo Metro Chiyoda Line NERFINISHED ⓘ Tokyo Metro Hanzomon Line NERFINISHED ⓘ Tokyo Metro Hibiya Line NERFINISHED ⓘ Tokyo Metro Marunouchi Line NERFINISHED ⓘ Tokyo Metro Toei Shinjuku Line NERFINISHED ⓘ Tokyo Metro Yurakucho Line NERFINISHED ⓘ |
| depot |
Fukagawa Depot
ⓘ
Fukagawa Depot ⓘ
surface form:
Gyotoku Depot
|
| direction | east–west ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| hasStation |
Baraki-nakayama Station
NERFINISHED
ⓘ
Gyotoku Station NERFINISHED ⓘ Iidabashi Station NERFINISHED ⓘ Kagurazaka Station NERFINISHED ⓘ Kasai Station NERFINISHED ⓘ Kayabacho Station NERFINISHED ⓘ Kiba Station NERFINISHED ⓘ Kudanshita Station NERFINISHED ⓘ Minami-gyotoku Station NERFINISHED ⓘ Minami-sunamachi Station NERFINISHED ⓘ Monzen-nakacho Station NERFINISHED ⓘ Myoden Station NERFINISHED ⓘ Nakano Station NERFINISHED ⓘ Nihombashi Station NERFINISHED ⓘ Nishi-funabashi Station NERFINISHED ⓘ Nishi-kasai Station NERFINISHED ⓘ Ochiai Station NERFINISHED ⓘ Otemachi Station NERFINISHED ⓘ Takadanobaba Station NERFINISHED ⓘ Takebashi Station NERFINISHED ⓘ Toyocho Station NERFINISHED ⓘ Urayasu Station NERFINISHED ⓘ Waseda Station NERFINISHED ⓘ |
| lineCode | T ⓘ |
| lineColor | sky blue ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| notableFeature | one of the busiest Tokyo Metro lines by ridership ⓘ |
| numberOfTracks | 2 ⓘ |
| openingDate | 1964-12-23 ⓘ |
| operator | Tokyo Metro ⓘ |
| servesArea |
Chiba Prefecture
NERFINISHED
ⓘ
central Tokyo ⓘ eastern Tokyo ⓘ |
| servicePattern |
commuter rapid
ⓘ
local ⓘ rapid ⓘ |
| terminusStation |
Nakano Station
NERFINISHED
ⓘ
Nishi-Funabashi Station NERFINISHED ⓘ |
| throughServiceWith |
JR East Chuo Line (Rapid)
NERFINISHED
ⓘ
JR East Chuo-Sobu Line NERFINISHED ⓘ JR East Sobu Line (Rapid) NERFINISHED ⓘ Toyo Rapid Railway Line NERFINISHED ⓘ |
| trackGauge | 1,067 mm ⓘ |
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: Tozai Line Description of subject: The Tozai Line is a major Tokyo Metro subway line that runs east–west across Tokyo, connecting central business districts with suburban residential areas.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.