Mutsu
E877104
Mutsu was a Japanese Nagato-class battleship of the Imperial Japanese Navy that served prominently during the interwar period and World War II before being destroyed by an internal explosion in 1943.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mutsu canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9765482 — 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: Mutsu Context triple: [Mobile Fleet, notableShip, Mutsu]
-
A.
Ōshū
Ōshū is a city in Japan’s Tōhoku region known for its rural landscapes, historical sites, and agricultural production.
-
B.
Seishirō
Seishirō is a Japanese given name commonly used for male individuals.
-
C.
Sumoto
Sumoto is a coastal city located on Awaji Island in Japan, known for its hot springs, scenic views of the Seto Inland Sea, and citrus production.
-
D.
Ichigaya
Ichigaya is a central Tokyo district known for its major railway station, government and educational institutions, and proximity to the Imperial Palace area.
-
E.
Ryōtsu
Ryōtsu was a former city on Sado Island in Niigata Prefecture, Japan, known for its coastal setting and later incorporation into the city of Sado.
- 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: Mutsu Target entity description: Mutsu was a Japanese Nagato-class battleship of the Imperial Japanese Navy that served prominently during the interwar period and World War II before being destroyed by an internal explosion in 1943.
-
A.
Ōshū
Ōshū is a city in Japan’s Tōhoku region known for its rural landscapes, historical sites, and agricultural production.
-
B.
Seishirō
Seishirō is a Japanese given name commonly used for male individuals.
-
C.
Sumoto
Sumoto is a coastal city located on Awaji Island in Japan, known for its hot springs, scenic views of the Seto Inland Sea, and citrus production.
-
D.
Ichigaya
Ichigaya is a central Tokyo district known for its major railway station, government and educational institutions, and proximity to the Imperial Palace area.
-
E.
Ryōtsu
Ryōtsu was a former city on Sado Island in Niigata Prefecture, Japan, known for its coastal setting and later incorporation into the city of Sado.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
Nagato-class battleship
ⓘ
capital ship ⓘ warship ⓘ |
| armamentAA | 25 mm anti-aircraft guns ⓘ |
| armamentMain |
4 twin 41 cm/45 Type 3 naval guns
ⓘ
8 × 410 mm guns ⓘ |
| armamentSecondary | 140 mm guns ⓘ |
| armorBelt | up to 305 mm ⓘ |
| armorDeck | up to about 70 mm ⓘ |
| beam | about 29 m ⓘ |
| builder | Yokosuka Naval Arsenal NERFINISHED ⓘ |
| casualties | over 1100 crew killed ⓘ |
| causeOfLoss | internal magazine explosion ⓘ |
| commissioned | 1921-10-24 ⓘ |
| conflict | World War II ⓘ |
| countryOfOrigin | Japan ⓘ |
| dateOfSinking | 1943-06-08 ⓘ |
| displacementFullLoad | about 39000 tons ⓘ |
| displacementStandard | about 32000 tons ⓘ |
| era | interwar period ⓘ |
| fate | destroyed by internal explosion ⓘ |
| homePort | Kure Naval Base NERFINISHED ⓘ |
| hullNumber | Battleship No. 4 NERFINISHED ⓘ |
| laidDown | 1918-06-01 ⓘ |
| launched | 1920-05-31 ⓘ |
| lengthOverall | about 215.8 m ⓘ |
| maximumSpeed | about 26.5 knots ⓘ |
| modernizationDetails |
enhanced anti-aircraft armament
ⓘ
improved armor protection ⓘ upgraded machinery ⓘ |
| modernized | 1930s ⓘ |
| namedAfter | Mutsu Province NERFINISHED ⓘ |
| navalFleet | Combined Fleet NERFINISHED ⓘ |
| notableEvent | participated in prewar fleet reviews ⓘ |
| operator | Imperial Japanese Navy ⓘ |
| placeOfSinking | Hashirajima anchorage, Hiroshima Bay NERFINISHED ⓘ |
| propulsion |
oil-fired boilers
ⓘ
steam turbines ⓘ |
| role | fleet flagship (interwar period) ⓘ |
| scrapping | partial salvage after sinking ⓘ |
| serviceEndEra | Showa period NERFINISHED ⓘ |
| serviceStartEra | Taisho period NERFINISHED ⓘ |
| shipClass | Nagato-class NERFINISHED ⓘ |
| sisterShip | Nagato NERFINISHED ⓘ |
| usedFor |
fleet exercises
ⓘ
showing the flag ⓘ training ⓘ |
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: Mutsu Description of subject: Mutsu was a Japanese Nagato-class battleship of the Imperial Japanese Navy that served prominently during the interwar period and World War II before being destroyed by an internal explosion in 1943.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.