Japan Transport Safety Board
E558578
The Japan Transport Safety Board is a Japanese government body responsible for investigating accidents and incidents across aviation, rail, marine, and other transport modes to improve safety.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Japan Transport Safety Board canonical | 3 |
| Japan Marine Accident Inquiry Agency | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5957173 — 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: Japan Transport Safety Board Context triple: [Kasumigaseki, Chiyoda, Tokyo, hasAgency, Japan Transport Safety Board]
-
A.
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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B.
Japan Civil Aviation Bureau
The Japan Civil Aviation Bureau is the Japanese government agency responsible for overseeing and regulating civil aviation safety, operations, and standards within Japan.
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C.
Japan Railways Group
Japan Railways Group is a major network of regional railway companies in Japan that emerged from the privatization of the former Japanese National Railways and operates much of the country’s passenger rail services, including high-speed Shinkansen lines.
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D.
East Japan Railway Company
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.
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E.
Tokyo Metropolitan Bureau of Transportation
The Tokyo Metropolitan Bureau of Transportation is the local government agency that operates key public transit services in Tokyo, including subways, trams, and buses.
- 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: Japan Transport Safety Board Target entity description: The Japan Transport Safety Board is a Japanese government body responsible for investigating accidents and incidents across aviation, rail, marine, and other transport modes to improve safety.
-
A.
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.
-
B.
Japan Civil Aviation Bureau
The Japan Civil Aviation Bureau is the Japanese government agency responsible for overseeing and regulating civil aviation safety, operations, and standards within Japan.
-
C.
Japan Railways Group
Japan Railways Group is a major network of regional railway companies in Japan that emerged from the privatization of the former Japanese National Railways and operates much of the country’s passenger rail services, including high-speed Shinkansen lines.
-
D.
East Japan Railway Company
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.
-
E.
Tokyo Metropolitan Bureau of Transportation
The Tokyo Metropolitan Bureau of Transportation is the local government agency that operates key public transit services in Tokyo, including subways, trams, and buses.
- F. None of above. chosen
Statements (36)
| Predicate | Object |
|---|---|
| instanceOf |
government agency
ⓘ
transport safety investigation authority ⓘ |
| abbreviation | JTSB ⓘ |
| appliesToJurisdiction |
civil aviation in Japan
ⓘ
marine transport in Japan ⓘ rail transport in Japan ⓘ |
| collaboratesWith |
International Civil Aviation Organization
ⓘ
foreign accident investigation authorities ⓘ |
| country | Japan ⓘ |
| fieldOfWork |
accident investigation
ⓘ
aviation safety ⓘ maritime safety ⓘ railway safety ⓘ transport safety ⓘ |
| goal | prevention of future transport accidents ⓘ |
| headquartersLocation |
Japan
ⓘ
Tokyo ⓘ |
| jurisdiction | Japan ⓘ |
| languageOfWorkOrName | Japanese ⓘ |
| legalBasis | Act for Establishment of the Japan Transport Safety Board ⓘ |
| motto | Safety for all transport modes ⓘ |
| nativeName | 運輸安全委員会 ⓘ |
| parentOrganization | Ministry of Land, Infrastructure, Transport and Tourism ⓘ |
| partOf | Government of Japan ⓘ |
| predecessor |
Aircraft and Railway Accidents Investigation Commission
ⓘ
Japan Marine Accident Inquiry Agency ⓘ
linked to:
Japan Transport Safety Board
|
| produces |
accident investigation reports
ⓘ
safety recommendations ⓘ |
| responsibility |
aviation accident investigation
ⓘ
improving transport safety ⓘ investigation of serious transport incidents ⓘ issuing safety recommendations ⓘ marine accident investigation ⓘ railway accident investigation ⓘ |
| sector | transportation ⓘ |
| website | https://www.mlit.go.jp/jtsb/ ⓘ |
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: Japan Transport Safety Board Description of subject: The Japan Transport Safety Board is a Japanese government body responsible for investigating accidents and incidents across aviation, rail, marine, and other transport modes to improve safety.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Japan Transport Safety Board