Mitsubishi Ki-21
E48176
The Mitsubishi Ki-21 was a twin-engine Japanese heavy bomber used extensively by the Imperial Japanese Army during the early years of World War II.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Mitsubishi Ki-21 canonical | 8 |
| Mitsubishi Ki-21-II | 2 |
| Mitsubishi Ki-21 bomber | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T296558 — 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: Mitsubishi Ki-21 Context triple: [Imperial Japanese Army Air Service, usedAircraft, Mitsubishi Ki-21]
-
A.
Nakajima Ki-27
The Nakajima Ki-27 was a Japanese single-engine, fixed-gear fighter aircraft that served as the Imperial Japanese Army’s main frontline fighter in the late 1930s and early World War II.
-
B.
Nakajima Ki-44
The Nakajima Ki-44 was a fast, heavily armed Japanese single-seat fighter aircraft of World War II, notable for its emphasis on climb rate and interception over maneuverability.
-
C.
Nakajima Ki-43
The Nakajima Ki-43 was a highly maneuverable Japanese single-engine fighter aircraft of World War II, widely used in the early and mid-war years across multiple Asian and Pacific battlefronts.
-
D.
Nakajima Ki-84
The Nakajima Ki-84 was a late-World War II Japanese single-seat fighter aircraft renowned for its high speed, powerful armament, and effectiveness against Allied fighters and bombers.
-
E.
Aichi D3A dive bombers
The Aichi D3A was a Japanese carrier-based dive bomber used extensively by the Imperial Japanese Navy during World War II, notably in the attack on Pearl Harbor.
- 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: Mitsubishi Ki-21 Target entity description: The Mitsubishi Ki-21 was a twin-engine Japanese heavy bomber used extensively by the Imperial Japanese Army during the early years of World War II.
-
A.
Nakajima Ki-27
The Nakajima Ki-27 was a Japanese single-engine, fixed-gear fighter aircraft that served as the Imperial Japanese Army’s main frontline fighter in the late 1930s and early World War II.
-
B.
Nakajima Ki-44
The Nakajima Ki-44 was a fast, heavily armed Japanese single-seat fighter aircraft of World War II, notable for its emphasis on climb rate and interception over maneuverability.
-
C.
Nakajima Ki-43
The Nakajima Ki-43 was a highly maneuverable Japanese single-engine fighter aircraft of World War II, widely used in the early and mid-war years across multiple Asian and Pacific battlefronts.
-
D.
Nakajima Ki-84
The Nakajima Ki-84 was a late-World War II Japanese single-seat fighter aircraft renowned for its high speed, powerful armament, and effectiveness against Allied fighters and bombers.
-
E.
Aichi D3A dive bombers
The Aichi D3A was a Japanese carrier-based dive bomber used extensively by the Imperial Japanese Navy during World War II, notably in the attack on Pearl Harbor.
- F. None of above. chosen
Statements (39)
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: Mitsubishi Ki-21 Description of subject: The Mitsubishi Ki-21 was a twin-engine Japanese heavy bomber used extensively by the Imperial Japanese Army during the early years of World War II.
Referenced by (11)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject linked to:
Nakajima Ha-5 radial engine
linked to: Mitsubishi Ki-21
linked to: Mitsubishi Ki-21
linked to: Mitsubishi Ki-21