East Japan Railway Company
E149875
East Japan Railway Company is a major Japanese railway operator that runs an extensive network of commuter and high-speed train services across eastern Honshu, including the Tokyo metropolitan area.
All labels observed (5)
| Label | Occurrences |
|---|---|
| East Japan Railway Company canonical | 161 |
| JR East | 145 |
| JR East Group | 1 |
| JR東日本 | 1 |
| 東日本旅客鉄道株式会社 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1080998 — 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: East Japan Railway Company Context triple: [JR Shonan–Shinjuku Line, operator, East Japan Railway Company]
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A.
West Japan Railway Company
West Japan Railway Company is one of Japan’s major regional railway operators, managing extensive rail networks across western Honshu including the Kansai area.
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B.
Central Japan Railway Company
Central Japan Railway Company is a major Japanese railway operator best known for running the Tokaido Shinkansen high-speed rail line connecting Tokyo, Nagoya, and Osaka.
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C.
Japanese National Railways
Japanese National Railways was Japan’s former state-owned railway company that operated the country’s nationwide rail network until its privatization and breakup in 1987.
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D.
Kinki Sharyo
Kinki Sharyo is a Japanese manufacturer specializing in the design and production of railway vehicles, including metro and light rail trains used in systems worldwide.
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E.
Kintetsu Railway
Kintetsu Railway is a major Japanese private railway operator in the Kansai region, known for its extensive interurban network connecting cities such as Osaka, Nara, Kyoto, and Nagoya.
- 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: East Japan Railway Company Target entity description: East Japan Railway Company is a major Japanese railway operator that runs an extensive network of commuter and high-speed train services across eastern Honshu, including the Tokyo metropolitan area.
-
A.
West Japan Railway Company
West Japan Railway Company is one of Japan’s major regional railway operators, managing extensive rail networks across western Honshu including the Kansai area.
-
B.
Central Japan Railway Company
Central Japan Railway Company is a major Japanese railway operator best known for running the Tokaido Shinkansen high-speed rail line connecting Tokyo, Nagoya, and Osaka.
-
C.
Japanese National Railways
Japanese National Railways was Japan’s former state-owned railway company that operated the country’s nationwide rail network until its privatization and breakup in 1987.
-
D.
Kinki Sharyo
Kinki Sharyo is a Japanese manufacturer specializing in the design and production of railway vehicles, including metro and light rail trains used in systems worldwide.
-
E.
Kintetsu Railway
Kintetsu Railway is a major Japanese private railway operator in the Kansai region, known for its extensive interurban network connecting cities such as Osaka, Nara, Kyoto, and Nagoya.
- F. None of above. chosen
Statements (48)
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: East Japan Railway Company Description of subject: East Japan Railway Company is a major Japanese railway operator that runs an extensive network of commuter and high-speed train services across eastern Honshu, including the Tokyo metropolitan area.
Referenced by (309)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Yurakucho Station