Nakajima B5N
E260944
The Nakajima B5N was a Japanese carrier-based torpedo bomber used extensively by the Imperial Japanese Navy during the early years of World War II, including the attack on Pearl Harbor.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Nakajima B5N canonical | 16 |
| B5N | 3 |
| Nakajima B5N torpedo bomber | 2 |
| Nakajima B5N torpedo bombers | 2 |
| Nakajima B5N2 Kate | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2153405 — 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 B5N Context triple: [5th Carrier Division, primaryAircraftType, Nakajima B5N]
-
A.
Nakajima B6N Tenzan
The Nakajima B6N Tenzan was an Imperial Japanese Navy carrier-based torpedo bomber of World War II, designed as a faster, longer-range, and more capable replacement for earlier Japanese torpedo bombers.
-
B.
Nakajima B4N
The Nakajima B4N was an early Japanese carrier-based torpedo bomber developed in the 1930s for the Imperial Japanese Navy.
-
C.
Yokosuka D4Y
The Yokosuka D4Y was a fast, carrier-based Japanese dive bomber used by the Imperial Japanese Navy during World War II.
-
D.
Nakajima J1N
The Nakajima J1N was a twin-engine Japanese World War II aircraft best known as a night fighter used by the Imperial Japanese Navy.
-
E.
Aichi B7A
The Aichi B7A was a late-World War II Japanese carrier-based torpedo-dive bomber designed for the Imperial Japanese Navy, notable for its high performance and versatility but produced in limited numbers.
- 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 B5N Target entity description: The Nakajima B5N was a Japanese carrier-based torpedo bomber used extensively by the Imperial Japanese Navy during the early years of World War II, including the attack on Pearl Harbor.
-
A.
Nakajima B6N Tenzan
The Nakajima B6N Tenzan was an Imperial Japanese Navy carrier-based torpedo bomber of World War II, designed as a faster, longer-range, and more capable replacement for earlier Japanese torpedo bombers.
-
B.
Nakajima B4N
The Nakajima B4N was an early Japanese carrier-based torpedo bomber developed in the 1930s for the Imperial Japanese Navy.
-
C.
Yokosuka D4Y
The Yokosuka D4Y was a fast, carrier-based Japanese dive bomber used by the Imperial Japanese Navy during World War II.
-
D.
Nakajima J1N
The Nakajima J1N was a twin-engine Japanese World War II aircraft best known as a night fighter used by the Imperial Japanese Navy.
-
E.
Aichi B7A
The Aichi B7A was a late-World War II Japanese carrier-based torpedo-dive bomber designed for the Imperial Japanese Navy, notable for its high performance and versatility but produced in limited numbers.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
World War II military aircraft
ⓘ
carrier-based aircraft ⓘ torpedo bomber ⓘ |
| aircraftConfiguration | three-seat single-engine monoplane ⓘ |
| alliedCodeName | Kate ⓘ |
| armament |
bombs
ⓘ
torpedoes ⓘ |
| countryOfOrigin | Japan ⓘ |
| crew | 3 ⓘ |
| crewPositions |
navigator-bombardier
ⓘ
pilot ⓘ radio operator-gunner ⓘ |
| defensiveArmament | single 7.7 mm machine gun ⓘ |
| designGoal | high-performance carrier-based torpedo bomber ⓘ |
| engineType | air-cooled radial piston engine ⓘ |
| firstFlight | 1937 ⓘ |
| introduced | 1938 ⓘ |
| manufacturer | Nakajima Aircraft Company ⓘ |
| maximumSpeed |
about 235 mph
ⓘ
about 378 km/h ⓘ |
| NATOReportingName | Kate ⓘ |
| notableFeature |
high performance at time of introduction
ⓘ
lacked armor protection ⓘ lacked self-sealing fuel tanks ⓘ |
| notableUse | primary torpedo bomber in early Pacific War campaigns ⓘ |
| numberOfEngines | 1 ⓘ |
| operatedFrom | Japanese aircraft carriers ⓘ |
| originLanguageDesignation |
Nakajima B5N
self-linksurface differs
ⓘ
surface form:
B5N
|
| powerplant | Nakajima Sakae radial engine ⓘ |
| primaryRole | torpedo bomber ⓘ |
| retired | 1945 ⓘ |
| secondaryRole |
level bomber
ⓘ
reconnaissance aircraft ⓘ |
| serviceEntryContext | replaced older biplane torpedo bombers in the Imperial Japanese Navy ⓘ |
| servicePeriod | late 1930s to 1945 ⓘ |
| successor | Nakajima B6N Tenzan ⓘ |
| undercarriage | retractable tailwheel landing gear ⓘ |
| usedBy | Imperial Japanese Navy ⓘ |
| usedByUnitType |
carrier air groups
ⓘ
land-based naval air units ⓘ |
| usedInConflict | World War II ⓘ |
| usedInOperation |
Battle of Midway
ⓘ
Battle of Coral Sea ⓘ
surface form:
Battle of the Coral Sea
Indian Ocean raid ⓘ attack on Pearl Harbor ⓘ |
| wingConfiguration | low-wing monoplane ⓘ |
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 B5N Description of subject: The Nakajima B5N was a Japanese carrier-based torpedo bomber used extensively by the Imperial Japanese Navy during the early years of World War II, including the attack on Pearl Harbor.
Referenced by (24)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Mitsubishi Kinsei
this entity surface form:
Nakajima B5N torpedo bomber
this entity surface form:
Nakajima B5N torpedo bomber
this entity surface form:
Nakajima B5N2 Kate
subject surface form:
Nakajima B5N
this entity surface form:
B5N
this entity surface form:
Nakajima B5N torpedo bombers
subject surface form:
Zuikaku
subject surface form:
Soryu
this entity surface form:
B5N
this entity surface form:
Nakajima B5N torpedo bombers
this entity surface form:
B5N