Maizuru Naval Base
E496516
Maizuru Naval Base is a major Japan Maritime Self-Defense Force installation on the Sea of Japan coast, historically one of the Imperial Japanese Navy’s principal naval districts.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Maizuru Naval Base canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5063885 — 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: Maizuru Naval Base Context triple: [Maizuru District, hasBase, Maizuru Naval Base]
-
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.
Maizuru Naval Arsenal
Maizuru Naval Arsenal was a major Imperial Japanese Navy shipbuilding and armaments facility located in Maizuru, Kyoto Prefecture, active primarily from the late 19th century through 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.
Kure Naval Base
Kure Naval Base is a major Japan Maritime Self-Defense Force installation and historic naval port located in Kure, Hiroshima Prefecture.
-
E.
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.
- 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: Maizuru Naval Base Target entity description: Maizuru Naval Base is a major Japan Maritime Self-Defense Force installation on the Sea of Japan coast, historically one of the Imperial Japanese Navy’s principal naval districts.
-
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.
Maizuru Naval Arsenal
Maizuru Naval Arsenal was a major Imperial Japanese Navy shipbuilding and armaments facility located in Maizuru, Kyoto Prefecture, active primarily from the late 19th century through 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.
Kure Naval Base
Kure Naval Base is a major Japan Maritime Self-Defense Force installation and historic naval port located in Kure, Hiroshima Prefecture.
-
E.
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.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
Japan Maritime Self-Defense Force base
ⓘ
naval base ⓘ |
| associatedWith |
Maizuru Naval Arsenal (historical)
NERFINISHED
ⓘ
Maizuru Naval District (historical) NERFINISHED ⓘ |
| category |
Japan Maritime Self-Defense Force bases
NERFINISHED
ⓘ
Military installations of Japan ⓘ Ports and harbors of the Sea of Japan ⓘ |
| controlledBy | Ministry of Defense of Japan NERFINISHED ⓘ |
| country | Japan ⓘ |
| era |
Meiji period (as Imperial Japanese Navy base)
NERFINISHED
ⓘ
post-World War II (as JMSDF base) ⓘ |
| garrison |
JMSDF Maizuru District Force
NERFINISHED
ⓘ
support units ⓘ surface combatant units ⓘ |
| hasAccessTo | Sea of Japan shipping lanes ⓘ |
| hasBranch | Maizuru District Headquarters NERFINISHED ⓘ |
| hasFacility |
administrative buildings
ⓘ
logistics and supply depots ⓘ maintenance and repair facilities ⓘ piers for destroyers and escort ships ⓘ training facilities ⓘ |
| hasHistoryAs | former Imperial Japanese Navy base ⓘ |
| hasNameInJapanese | 舞鶴基地 ⓘ |
| historicalOperator | Imperial Japanese Navy NERFINISHED ⓘ |
| locatedIn |
Honshu
ⓘ
Kansai region ⓘ Kyoto Prefecture ⓘ Maizuru, Kyoto Prefecture NERFINISHED ⓘ |
| locatedOn | Sea of Japan coast NERFINISHED ⓘ |
| militaryBranch | Japan Maritime Self-Defense Force NERFINISHED ⓘ |
| oneOf | principal naval districts of the Imperial Japanese Navy ⓘ |
| operator | Japan Maritime Self-Defense Force NERFINISHED ⓘ |
| partOf | Maizuru District NERFINISHED ⓘ |
| regionServed |
Sea of Japan
NERFINISHED
ⓘ
western and northern Japan maritime areas ⓘ |
| roleDuringPeacetime |
disaster relief support
ⓘ
maritime security operations ⓘ search and rescue support ⓘ |
| status | active ⓘ |
| strategicRole |
defense of Sea of Japan approaches
ⓘ
monitoring of maritime traffic in the Sea of Japan ⓘ |
| transitionedTo | Japan Maritime Self-Defense Force control after World War II ⓘ |
| type | coastal naval base ⓘ |
| usedFor |
fleet operations support
ⓘ
logistics ⓘ maintenance of JMSDF vessels ⓘ maritime defense of Japan ⓘ training ⓘ |
| wasPartOf | Maizuru Naval District NERFINISHED ⓘ |
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: Maizuru Naval Base Description of subject: Maizuru Naval Base is a major Japan Maritime Self-Defense Force installation on the Sea of Japan coast, historically one of the Imperial Japanese Navy’s principal naval districts.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.