Nakajima Kotobuki radial engine
E1019737
The Nakajima Kotobuki radial engine was a Japanese air-cooled aircraft engine widely used in the 1930s, notable for powering several early Imperial Japanese Navy and Army fighters.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Nakajima Kotobuki radial engine canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13095752 — 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: Nakajima Kotobuki radial engine Context triple: [Mitsubishi A5M, engineType, Nakajima Kotobuki radial engine]
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A.
Nakajima Sakae radial engine
The Nakajima Sakae radial engine was a widely used Japanese air-cooled aircraft engine of World War II, best known for powering frontline Imperial Japanese Navy and Army fighters and bombers such as the Mitsubishi A6M Zero.
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B.
Nakajima Mamoru 11 radial engine
The Nakajima Mamoru 11 was a Japanese air-cooled radial aircraft engine developed during World War II to power carrier-based aircraft such as the B6N Tenzan torpedo bomber.
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C.
Nakajima Homare radial engine
The Nakajima Homare was a powerful Japanese air-cooled radial aircraft engine used in several late-World War II Imperial Japanese Navy and Army fighters.
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D.
Nakajima Ha-5 radial engine
The Nakajima Ha-5 was a Japanese air-cooled radial aircraft engine of the 1930s, used to power several early World War II Imperial Japanese Army bombers and transports.
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E.
Nakajima Ha-25 radial engine
The Nakajima Ha-25 was a Japanese air-cooled radial aircraft engine widely used in World War II fighters, noted for its reliability and compact design.
- 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: Nakajima Kotobuki radial engine Target entity description: The Nakajima Kotobuki radial engine was a Japanese air-cooled aircraft engine widely used in the 1930s, notable for powering several early Imperial Japanese Navy and Army fighters.
-
A.
Nakajima Sakae radial engine
The Nakajima Sakae radial engine was a widely used Japanese air-cooled aircraft engine of World War II, best known for powering frontline Imperial Japanese Navy and Army fighters and bombers such as the Mitsubishi A6M Zero.
-
B.
Nakajima Mamoru 11 radial engine
The Nakajima Mamoru 11 was a Japanese air-cooled radial aircraft engine developed during World War II to power carrier-based aircraft such as the B6N Tenzan torpedo bomber.
-
C.
Nakajima Homare radial engine
The Nakajima Homare was a powerful Japanese air-cooled radial aircraft engine used in several late-World War II Imperial Japanese Navy and Army fighters.
-
D.
Nakajima Ha-5 radial engine
The Nakajima Ha-5 was a Japanese air-cooled radial aircraft engine of the 1930s, used to power several early World War II Imperial Japanese Army bombers and transports.
-
E.
Nakajima Ha-25 radial engine
The Nakajima Ha-25 was a Japanese air-cooled radial aircraft engine widely used in World War II fighters, noted for its reliability and compact design.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
air-cooled engine
ⓘ
aircraft piston engine ⓘ radial engine ⓘ |
| alsoKnownAs | Nakajima Kotobuki NERFINISHED ⓘ |
| application |
fighter aircraft
ⓘ
reconnaissance aircraft ⓘ trainer aircraft ⓘ |
| configuration | 9-cylinder radial ⓘ |
| coolingSystem | air-cooled ⓘ |
| countryOfOrigin | Japan ⓘ |
| designGoal | lightweight high-power engine for fighters ⓘ |
| developedIn | 1930s ⓘ |
| era | 1930s ⓘ |
| fuelType | aviation gasoline ⓘ |
| manufacturer | Nakajima Aircraft Company NERFINISHED ⓘ |
| notableFeature | wide operational use in 1930s Japanese aircraft ⓘ |
| notableFor | powering early Japanese fighter aircraft ⓘ |
| operator |
Imperial Japanese Army
NERFINISHED
ⓘ
Imperial Japanese Navy ⓘ |
| powerplantFor |
carrier-based fighters
ⓘ
land-based fighters ⓘ |
| regionOfUse | East Asia NERFINISHED ⓘ |
| successor |
Nakajima Hikari
NERFINISHED
ⓘ
Nakajima Sakae NERFINISHED ⓘ |
| usedBy |
Imperial Japanese Army Air Service
NERFINISHED
ⓘ
Imperial Japanese Navy Air Service NERFINISHED ⓘ |
| usedIn |
Imperial Japanese Army aircraft
NERFINISHED
ⓘ
Imperial Japanese Navy aircraft ⓘ Kawanishi E7K1 NERFINISHED ⓘ Kawasaki Ki-10 NERFINISHED ⓘ Mitsubishi A5M NERFINISHED ⓘ Mitsubishi F1M1 NERFINISHED ⓘ Nakajima A2N NERFINISHED ⓘ Nakajima A4N NERFINISHED ⓘ Nakajima Ki-11 NERFINISHED ⓘ Nakajima Ki-4 NERFINISHED ⓘ Tachikawa Ki-17 NERFINISHED ⓘ Tachikawa Ki-9 NERFINISHED ⓘ Yokosuka K4Y NERFINISHED ⓘ |
| usedInConflict |
Second Sino-Japanese War
NERFINISHED
ⓘ
early stages of World War II ⓘ |
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: Nakajima Kotobuki radial engine Description of subject: The Nakajima Kotobuki radial engine was a Japanese air-cooled aircraft engine widely used in the 1930s, notable for powering several early Imperial Japanese Navy and Army fighters.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Mitsubishi A5M