Keikyū Main Line
E502702
The Keikyū Main Line is a major private railway line in the Greater Tokyo area of Japan, operated by Keikyu Corporation and serving as a key commuter route between central Tokyo and cities in Kanagawa Prefecture.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Keikyū Main Line canonical | 10 |
| Keikyu Main Line | 1 |
| Keikyū Main Line (via Kawasaki) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2786819 — 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: Keikyū Main Line Context triple: [Kawasaki, hasTransportInfrastructure, Keikyū Main Line]
-
A.
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.
-
B.
Yokosuka Line
The Yokosuka Line is a major JR East railway line in the Greater Tokyo area that connects central Tokyo with Yokosuka in Kanagawa Prefecture, serving both commuter and intercity traffic.
-
C.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
D.
Yamatoji Line
The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route in the Kansai region.
-
E.
Sakaisuji Line
The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
- 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: Keikyū Main Line Target entity description: The Keikyū Main Line is a major private railway line in the Greater Tokyo area of Japan, operated by Keikyu Corporation and serving as a key commuter route between central Tokyo and cities in Kanagawa Prefecture.
-
A.
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.
-
B.
Yokosuka Line
The Yokosuka Line is a major JR East railway line in the Greater Tokyo area that connects central Tokyo with Yokosuka in Kanagawa Prefecture, serving both commuter and intercity traffic.
-
C.
Imazatosuji Line
The Imazatosuji Line is a rapid transit line in Osaka, Japan, operated by Osaka Metro and serving as one of the city’s main north–south subway corridors.
-
D.
Yamatoji Line
The Yamatoji Line is a railway line in Japan operated by JR West that connects Osaka with Nara, serving as a key commuter and intercity route in the Kansai region.
-
E.
Sakaisuji Line
The Sakaisuji Line is a rapid transit line in Osaka, Japan, forming part of the Osaka Metro network and connecting key districts through north–south underground service.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| connectsCity |
Kawasaki
NERFINISHED
ⓘ
Tokyo NERFINISHED ⓘ Yokohama NERFINISHED ⓘ |
| connectsWith |
Keikyū Airport Line
NERFINISHED
ⓘ
Keikyū Daishi Line NERFINISHED ⓘ Keikyū Kurihama Line NERFINISHED ⓘ Keikyū Zushi Line NERFINISHED ⓘ Toei Asakusa Line NERFINISHED ⓘ |
| country | Japan ⓘ |
| electrification | 1,500 V DC overhead catenary ⓘ |
| gauge | 1,435 mm standard gauge ⓘ |
| hasJapaneseName | 京急本線 NERFINISHED ⓘ |
| hasPrimaryTerminusInKanagawa | Uraga Station NERFINISHED ⓘ |
| hasPrimaryTerminusInTokyo | Shinagawa Station NERFINISHED ⓘ |
| hasRollingStockOperator | Keikyu Corporation NERFINISHED ⓘ |
| hasServicePattern |
limited express trains
ⓘ
local trains ⓘ rapid trains ⓘ |
| hasSignallingSystem | automatic block signalling ⓘ |
| hasTrainProtectionSystem | ATS (Automatic Train Stop) NERFINISHED ⓘ |
| isKeyCorridorFor | commuters between Tokyo and Yokohama area ⓘ |
| isMajorLineOf | Keikyu Corporation NERFINISHED ⓘ |
| lineColor | red ⓘ |
| locale |
Kanagawa Prefecture
NERFINISHED
ⓘ
Tokyo NERFINISHED ⓘ |
| locatedIn |
Greater Tokyo Area
NERFINISHED
ⓘ
Japan ⓘ |
| network | Keikyu NERFINISHED ⓘ |
| operator | Keikyu Corporation NERFINISHED ⓘ |
| owner | Keikyu Corporation NERFINISHED ⓘ |
| ownerType | private railway company ⓘ |
| partOfNetwork | Keikyu railway network NERFINISHED ⓘ |
| primaryUse | commuter transport ⓘ |
| regionServed |
eastern Kanagawa Prefecture
NERFINISHED
ⓘ
southwestern Tokyo ⓘ |
| serves |
Kanagawa Prefecture
NERFINISHED
ⓘ
Tokyo NERFINISHED ⓘ |
| servesRole | key commuter route between central Tokyo and Kanagawa cities ⓘ |
| status | in operation ⓘ |
| terminus |
Shinagawa Station
NERFINISHED
ⓘ
Uraga Station NERFINISHED ⓘ |
| throughServicesTo |
Keikyū Airport Line
NERFINISHED
ⓘ
Toei Asakusa Line NERFINISHED ⓘ |
| trackConfiguration | double track on most sections ⓘ |
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: Keikyū Main Line Description of subject: The Keikyū Main Line is a major private railway line in the Greater Tokyo area of Japan, operated by Keikyu Corporation and serving as a key commuter route between central Tokyo and cities in Kanagawa Prefecture.
Referenced by (12)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Ōta, Tokyo
this entity surface form:
Keikyu Main Line
subject surface form:
Sengaku-ji
this entity surface form:
Keikyū Main Line (via Kawasaki)