Keiyō Line
E321575
The Keiyō Line is a JR East railway line in the Tokyo area that runs along Tokyo Bay, connecting central Tokyo with destinations such as Maihama (Tokyo Disney Resort) and Chiba.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Keiyō Line canonical | 6 |
How this entity was disambiguated
This entity first appeared as the object of triple T1592360 — 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: Keiyō Line Context triple: [Tokyo Station, serves, Keiyō Line]
-
A.
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.
-
B.
Chuo Line
The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
-
C.
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.
-
D.
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.
-
E.
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.
- 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: Keiyō Line Target entity description: The Keiyō Line is a JR East railway line in the Tokyo area that runs along Tokyo Bay, connecting central Tokyo with destinations such as Maihama (Tokyo Disney Resort) and Chiba.
-
A.
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.
-
B.
Chuo Line
The Chuo Line is a major rapid transit line in the Osaka Metro system that runs east–west through central Osaka, connecting key commercial and residential districts.
-
C.
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.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
commuter rail line
ⓘ
railway line ⓘ |
| connects |
Soga Station
NERFINISHED
ⓘ
Tokyo Station NERFINISHED ⓘ |
| connectsTo |
Musashino Line
NERFINISHED
ⓘ
Sotobō Line NERFINISHED ⓘ Uchibō Line NERFINISHED ⓘ |
| electrification | 1500 V DC overhead catenary ⓘ |
| follows |
Tokyo Bay region
ⓘ
surface form:
Tokyo Bay coast
|
| hasServiceType |
local train
ⓘ
rapid train ⓘ through service to Musashino Line ⓘ |
| hasStation |
Chiba-Minato Station
NERFINISHED
ⓘ
Etchūjima Station NERFINISHED ⓘ Hatchōbori Station NERFINISHED ⓘ Ichikawa-Shiohama Station NERFINISHED ⓘ Inage-Kaigan Station NERFINISHED ⓘ Kaihin-Makuhari Station NERFINISHED ⓘ Kasai-Rinkai-Kōen Station NERFINISHED ⓘ Kemigawa-Hama Station NERFINISHED ⓘ Maihama Station NERFINISHED ⓘ Minami-Funabashi Station NERFINISHED ⓘ Shin-Kiba Station NERFINISHED ⓘ Shin-Urayasu Station NERFINISHED ⓘ Shiomi Station NERFINISHED ⓘ Soga Station NERFINISHED ⓘ Tokyo Station NERFINISHED ⓘ Urayasu Station NERFINISHED ⓘ |
| lineColor | red ⓘ |
| locatedIn |
Chiba Prefecture
NERFINISHED
ⓘ
Japan ⓘ Tokyo Prefecture ⓘ |
| nameDerivation | from Tokyo (Tōkyō) and Chiba (Chiba) characters ⓘ |
| opened | 1986 ⓘ |
| operator |
East Japan Railway Company
ⓘ
East Japan Railway Company ⓘ
surface form:
JR East
|
| ownedBy |
East Japan Railway Company
ⓘ
surface form:
JR East
|
| owner | East Japan Railway Company ⓘ |
| partOfNetwork | JR East urban network ⓘ |
| region | Kantō region ⓘ |
| rollingStockUsed |
JR East 205 series
ⓘ
JR East 209 series ⓘ E233 series EMU ⓘ
surface form:
JR East E233 series
|
| serves |
Maihama Station area
ⓘ
Tokyo Disney Resort ⓘ Tokyo metropolitan area ⓘ |
| terminus |
Soga Station
NERFINISHED
ⓘ
Tokyo Station NERFINISHED ⓘ |
| trackGauge |
1067 mm
ⓘ
Cape 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: Keiyō Line Description of subject: The Keiyō Line is a JR East railway line in the Tokyo area that runs along Tokyo Bay, connecting central Tokyo with destinations such as Maihama (Tokyo Disney Resort) and Chiba.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.