Japan Maritime Self-Defense Force Yokosuka Naval Base
E389477
Japan Maritime Self-Defense Force Yokosuka Naval Base is a major Japanese naval installation and headquarters of the Maritime Self-Defense Force, playing a central role in the country’s maritime security and operations.
All labels observed (8)
How this entity was disambiguated
This entity first appeared as the object of triple T3793143 — 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 Maritime Self-Defense Force Yokosuka Naval Base Context triple: [Yokosuka, Kanagawa, Japan, hosts, Japan Maritime Self-Defense Force Yokosuka Naval Base]
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A.
Yokosuka Naval Base
Yokosuka Naval Base is a major United States Navy installation in Japan that serves as the home port for the U.S. Seventh Fleet and a key hub for naval operations in the Western Pacific.
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B.
Yokosuka Naval Arsenal
Yokosuka Naval Arsenal was a major Imperial Japanese Navy shipbuilding and armaments facility that constructed many of Japan’s warships before and during World War II.
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C.
Sasebo Naval Arsenal
Sasebo Naval Arsenal was a major Imperial Japanese Navy shipbuilding and repair facility located in Sasebo, Nagasaki, that played a key role in Japan’s naval operations before and during World War II.
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D.
Futenma Air Station
Futenma Air Station is a major United States Marine Corps air base located in the densely populated city of Ginowan on Japan’s Okinawa Island, long at the center of local controversy over noise, safety, and the American military presence.
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E.
Tsukiji Naval Training Center
Tsukiji Naval Training Center was a late Edo-period naval academy in Tokyo that played a key role in modernizing Japan’s navy through Western-style maritime education and training.
- 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 Maritime Self-Defense Force Yokosuka Naval Base Target entity description: Japan Maritime Self-Defense Force Yokosuka Naval Base is a major Japanese naval installation and headquarters of the Maritime Self-Defense Force, playing a central role in the country’s maritime security and operations.
-
A.
Yokosuka Naval Base
Yokosuka Naval Base is a major United States Navy installation in Japan that serves as the home port for the U.S. Seventh Fleet and a key hub for naval operations in the Western Pacific.
-
B.
Yokosuka Naval Arsenal
Yokosuka Naval Arsenal was a major Imperial Japanese Navy shipbuilding and armaments facility that constructed many of Japan’s warships before and during World War II.
-
C.
Sasebo Naval Arsenal
Sasebo Naval Arsenal was a major Imperial Japanese Navy shipbuilding and repair facility located in Sasebo, Nagasaki, that played a key role in Japan’s naval operations before and during World War II.
-
D.
Futenma Air Station
Futenma Air Station is a major United States Marine Corps air base located in the densely populated city of Ginowan on Japan’s Okinawa Island, long at the center of local controversy over noise, safety, and the American military presence.
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E.
Tsukiji Naval Training Center
Tsukiji Naval Training Center was a late Edo-period naval academy in Tokyo that played a key role in modernizing Japan’s navy through Western-style maritime education and training.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
Japan Maritime Self-Defense Force facility
ⓘ
military installation ⓘ naval base ⓘ |
| associatedWith |
Maritime Self-Defense Force Fleet
ⓘ
surface form:
Japan Maritime Self-Defense Force Fleet Headquarters
Japanese maritime security operations ⓘ |
| coast | Pacific Ocean ⓘ |
| controlledBy | Japan Maritime Self-Defense Force ⓘ |
| country | Japan ⓘ |
| garrison | Japan Maritime Self-Defense Force ⓘ |
| hasFacility |
administrative buildings
ⓘ
communications facilities ⓘ dry docks ⓘ logistics warehouses ⓘ piers ⓘ training schools ⓘ |
| hasFunction |
fleet base
ⓘ
logistics hub ⓘ naval headquarters ⓘ training facility ⓘ |
| isHeadquartersOf | Japan Maritime Self-Defense Force ⓘ |
| isMajorBaseFor | Japan Maritime Self-Defense Force ⓘ |
| language | Japanese ⓘ |
| locatedIn |
Honshu
ⓘ
Japan ⓘ Kanagawa Prefecture NERFINISHED ⓘ Yokosuka ⓘ |
| locatedOn | Tokyo Bay ⓘ |
| militaryBranch | naval forces ⓘ |
| near | Tokyo ⓘ |
| operator | Japan Maritime Self-Defense Force ⓘ |
| partOf | Japan Self-Defense Forces ⓘ |
| role |
command and control
ⓘ
fleet maintenance ⓘ logistics support ⓘ maritime defense of Japan ⓘ maritime security ⓘ naval operations support ⓘ |
| securityLevel | high-security military area ⓘ |
| strategicImportance |
central role in Japan’s maritime security
ⓘ
key base for operations in and around Tokyo Bay ⓘ key base for operations in the Western Pacific ⓘ |
| usedFor |
deployment of JMSDF submarines
ⓘ
deployment of JMSDF surface vessels ⓘ maintenance of naval vessels ⓘ replenishment and resupply ⓘ training of JMSDF personnel ⓘ |
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 Maritime Self-Defense Force Yokosuka Naval Base Description of subject: Japan Maritime Self-Defense Force Yokosuka Naval Base is a major Japanese naval installation and headquarters of the Maritime Self-Defense Force, playing a central role in the country’s maritime security and operations.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Japan Maritime Self-Defense Force base
this entity surface form:
Japan Maritime Self-Defense Force bases in Yokosuka
this entity surface form:
Japan Maritime Self-Defense Force Yokosuka base
Yokosuka Naval Base
→
sharesFacilitiesWith
→
Japan Maritime Self-Defense Force Yokosuka Naval Base
ⓘ
this entity surface form:
Japan Maritime Self-Defense Force Yokosuka District
this entity surface form:
Japan Maritime Self-Defense Force Yokosuka Base
this entity surface form:
Japan Maritime Self-Defense Force base at Yokosuka
subject surface form:
U.S. Navy base in Yokosuka
this entity surface form:
Japan Maritime Self-Defense Force base at Yokosuka
this entity surface form:
Japan Maritime Self-Defense Force Yokosuka base
this entity surface form:
Japan Maritime Self-Defense Force base Yokosuka