Tokyo Gas
E1035309
Tokyo Gas is a major Japanese energy company, primarily supplying city gas and related services in the Tokyo metropolitan area.
All labels observed (6)
| Label | Occurrences |
|---|---|
| Tokyo Gas canonical | 5 |
| Tokyo Gas Baypower | 1 |
| Tokyo Gas Company | 1 |
| Tokyo Gas Engineering Solutions | 1 |
| Tokyo Gas Engineering Solutions Corporation | 1 |
| Tokyo Gas Urban Development Co., Ltd. | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13343895 — 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: Tokyo Gas Context triple: [Shinjuku Park Tower, owner, Tokyo Gas]
-
A.
Osaka Gas
Osaka Gas is a major Japanese energy company primarily engaged in the production, supply, and sale of natural gas and related energy services.
-
B.
Tokyo Gas and Electric Industrial Company
Tokyo Gas and Electric Industrial Company was a Japanese industrial firm active in the early 20th century that played a foundational role in the country’s automotive industry, including establishing the company that became Hino Motors.
-
C.
Tokyo Electric Power Company
Tokyo Electric Power Company is Japan’s largest electric utility, internationally known for operating the Fukushima Daiichi nuclear plant involved in the 2011 nuclear disaster.
-
D.
Odakyu Group
Odakyu Group is a major Japanese private railway and diversified corporate group centered around Odakyu Electric Railway, operating transportation, retail, real estate, and leisure businesses.
-
E.
Keikyu Corporation
Keikyu Corporation is a major private railway operator in the Greater Tokyo area, best known for its commuter and airport rail services connecting central Tokyo with Haneda Airport and the Miura Peninsula.
- 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: Tokyo Gas Target entity description: Tokyo Gas is a major Japanese energy company, primarily supplying city gas and related services in the Tokyo metropolitan area.
-
A.
Osaka Gas
Osaka Gas is a major Japanese energy company primarily engaged in the production, supply, and sale of natural gas and related energy services.
-
B.
Tokyo Gas and Electric Industrial Company
Tokyo Gas and Electric Industrial Company was a Japanese industrial firm active in the early 20th century that played a foundational role in the country’s automotive industry, including establishing the company that became Hino Motors.
-
C.
Tokyo Electric Power Company
Tokyo Electric Power Company is Japan’s largest electric utility, internationally known for operating the Fukushima Daiichi nuclear plant involved in the 2011 nuclear disaster.
-
D.
Odakyu Group
Odakyu Group is a major Japanese private railway and diversified corporate group centered around Odakyu Electric Railway, operating transportation, retail, real estate, and leisure businesses.
-
E.
Keikyu Corporation
Keikyu Corporation is a major private railway operator in the Greater Tokyo area, best known for its commuter and airport rail services connecting central Tokyo with Haneda Airport and the Miura Peninsula.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
energy company
ⓘ
gas utility company ⓘ public company ⓘ |
| areaServed |
Chiba Prefecture
NERFINISHED
ⓘ
Gunma Prefecture ⓘ Ibaraki Prefecture ⓘ Kanagawa Prefecture ⓘ Nagano Prefecture ⓘ Saitama Prefecture ⓘ Tochigi Prefecture NERFINISHED ⓘ Tokyo ⓘ Yamanashi Prefecture NERFINISHED ⓘ |
| country | Japan ⓘ |
| foundedBy |
Tokyo Prefectural Government
ⓘ
linked to:
Tokyo Metropolitan Government
|
| hasBusinessModel | regulated utility and competitive retail energy ⓘ |
| hasJapaneseName | 東京ガス株式会社 ⓘ |
| hasSubsidiary |
Tokyo Gas Engineering Solutions Corporation
ⓘ
linked to:
Tokyo Gas
Tokyo Gas Urban Development Co., Ltd. ⓘ
linked to:
Tokyo Gas
|
| headquartersLocation |
Minato, Tokyo
ⓘ
linked to:
Minato, Tokyo, Japan
Tokyo ⓘ |
| imports | liquefied natural gas ⓘ |
| inception | 1885 ⓘ |
| industry |
electric power
ⓘ
energy ⓘ natural gas ⓘ utility ⓘ |
| ISIN | JP3573000001 ⓘ |
| languageOfWorkOrName | Japanese ⓘ |
| legalForm | Kabushiki gaisha ⓘ |
| locatedInTimeZone | Japan Standard Time ⓘ |
| majorShareholderOf | Tokyo Gas Co., Ltd. group companies ⓘ |
| numberOfEmployees | over 10000 ⓘ |
| offers |
energy consulting services
ⓘ
gas appliance maintenance services ⓘ gas appliance sales ⓘ |
| originalName |
Tokyo Gas Company
ⓘ
linked to:
Tokyo Gas
|
| owns |
Tokyo Gas Baypower
ⓘ
linked to:
Tokyo Gas
Tokyo Gas Engineering Solutions ⓘ
linked to:
Tokyo Gas
Tokyo Gas Urban Development ⓘ |
| serves | Tokyo metropolitan area ⓘ |
| shortName | Tokyo Gas ⓘ |
| stockExchange | Tokyo Stock Exchange ⓘ |
| supplies |
city gas
ⓘ
electricity ⓘ heat energy ⓘ liquefied natural gas ⓘ |
| tickerSymbol | 9531 ⓘ |
| website | https://www.tokyo-gas.co.jp/ ⓘ |
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: Tokyo Gas Description of subject: Tokyo Gas is a major Japanese energy company, primarily supplying city gas and related services in the Tokyo metropolitan area.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Tokyo Gas
linked to: Tokyo Gas
linked to: Tokyo Gas