Keio Line
E286879
The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Keio Line canonical | 11 |
| Keio Railway | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1480725 — 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: Keio Line Context triple: [Sasazuka, railwayLine, Keio Line]
-
A.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
-
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.
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.
-
D.
Tanimachi Line
The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
-
E.
Keihan Main Line
The Keihan Main Line is a major Japanese railway line operated by Keihan Electric Railway, connecting Osaka and Kyoto and serving as a key commuter and intercity route in the Kansai region.
- 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: Keio Line Target entity description: The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
-
A.
Keio Inokashira Line
The Keio Inokashira Line is a private railway line in Tokyo operated by Keio Corporation, connecting Shibuya with the western suburb of Kichijōji and serving several popular residential and commercial districts along the way.
-
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.
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.
-
D.
Tanimachi Line
The Tanimachi Line is a major rapid transit line in Osaka, Japan, running north–south through the city as part of the Osaka Metro network.
-
E.
Keihan Main Line
The Keihan Main Line is a major Japanese railway line operated by Keihan Electric Railway, connecting Osaka and Kyoto and serving as a key commuter and intercity route in the Kansai region.
- F. None of above. chosen
Statements (40)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| category |
Keio Corporation lines
ⓘ
linked to:
Keio railway network
Rail transport in Tokyo ⓘ Railway lines in Japan ⓘ |
| connects |
central Tokyo
ⓘ
western suburbs of Tokyo ⓘ |
| country | Japan ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| electrified | yes ⓘ |
| fareSystem | integrated with other Keio lines ⓘ |
| gauge | 1,372 mm ⓘ |
| hasOperatorType | private railway operator ⓘ |
| locatedIn |
Japan
ⓘ
Tokyo ⓘ |
| locatedInMetropolitanArea |
Greater Tokyo Area
ⓘ
linked to:
Tokyo metropolitan area
|
| numberOfTracks | double track (most of the route) ⓘ |
| operator | Keio Corporation ⓘ |
| owner | Keio Corporation ⓘ |
| partOfNetwork | Keio Electric Railway network ⓘ |
| primaryStation | Shinjuku Station NERFINISHED ⓘ |
| railwayCompany | Keio Corporation ⓘ |
| railwaySystem | private railway in Japan ⓘ |
| regionServed | western suburbs of Tokyo ⓘ |
| servesArea |
Tokyo Metropolis
ⓘ
linked to:
Tokyo metropolitan area
|
| serviceType |
commuter rail
ⓘ
express service ⓘ limited express service ⓘ local service ⓘ rapid service ⓘ semi-express service ⓘ |
| status | in operation ⓘ |
| terminus | Shinjuku Station NERFINISHED ⓘ |
| ticketing | accepts IC cards such as Suica and PASMO ⓘ |
| trackGaugeType | narrow gauge ⓘ |
| transportMode | rail ⓘ |
| usesRollingStock |
Keio 5000 series (second generation)
ⓘ
Keio 7000 series ⓘ Keio 8000 series ⓘ Keio 9000 series ⓘ |
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: Keio Line Description of subject: The Keio Line is a major private railway line in Tokyo, Japan, operated by Keio Corporation, connecting central Tokyo with its western suburbs.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Setagaya, Tokyo, Japan
subject linked to:
Chōfu, Tokyo, Japan
linked to: Keio Line