atomic bombing of Nagasaki
E2840
The atomic bombing of Nagasaki was the second nuclear attack carried out by the United States against Japan in August 1945, leading to massive civilian casualties and contributing to Japan’s surrender in World War II.
All labels observed (10)
| Label | Occurrences |
|---|---|
| atomic bombing of Nagasaki canonical | 23 |
| Atomic bombing of Nagasaki | 4 |
| bombing of Nagasaki | 3 |
| Nagasaki atomic bombing | 2 |
| 1945 atomic bombing of Nagasaki | 1 |
| Fat Man | 1 |
| Fat Man bombing of Nagasaki | 1 |
| Little Boy | 1 |
| Nagasaki bombing | 1 |
| United States atomic bombing of Nagasaki | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T13742 — 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.
Target entity: atomic bombing of Nagasaki Context triple: [Pacific War, keyEvent, atomic bombing of Nagasaki]
-
A.
atomic bombing of Hiroshima
The atomic bombing of Hiroshima was the first use of a nuclear weapon in war, when the United States dropped an atomic bomb on the Japanese city of Hiroshima on August 6, 1945, causing massive destruction and loss of life.
-
B.
attack on Pearl Harbor
The attack on Pearl Harbor was the surprise Japanese military strike on the U.S. naval base in Hawaii on December 7, 1941, that led to the United States’ entry into World War II.
-
C.
Manhattan Project
The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
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D.
Battle of Okinawa
The Battle of Okinawa was a major and brutal 1945 Pacific campaign between the United States and Japan, marked by intense ground combat, massive casualties, and kamikaze attacks, and is often seen as a decisive factor leading to the end of World War II.
-
E.
Battle of Iwo Jima
The Battle of Iwo Jima was a major 1945 Pacific campaign clash between the United States and Japan, famed for its brutal fighting and the iconic flag-raising on Mount Suribachi.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: atomic bombing of Nagasaki Target entity description: The atomic bombing of Nagasaki was the second nuclear attack carried out by the United States against Japan in August 1945, leading to massive civilian casualties and contributing to Japan’s surrender in World War II.
-
A.
atomic bombing of Hiroshima
The atomic bombing of Hiroshima was the first use of a nuclear weapon in war, when the United States dropped an atomic bomb on the Japanese city of Hiroshima on August 6, 1945, causing massive destruction and loss of life.
-
B.
attack on Pearl Harbor
The attack on Pearl Harbor was the surprise Japanese military strike on the U.S. naval base in Hawaii on December 7, 1941, that led to the United States’ entry into World War II.
-
C.
Manhattan Project
The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
-
D.
Battle of Okinawa
The Battle of Okinawa was a major and brutal 1945 Pacific campaign between the United States and Japan, marked by intense ground combat, massive casualties, and kamikaze attacks, and is often seen as a decisive factor leading to the end of World War II.
-
E.
Battle of Iwo Jima
The Battle of Iwo Jima was a major 1945 Pacific campaign clash between the United States and Japan, famed for its brutal fighting and the iconic flag-raising on Mount Suribachi.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
United States military operation
ⓘ
event in World War II ⓘ mass killing ⓘ nuclear attack ⓘ war crime allegation subject ⓘ |
| contributedTo |
end of World War II in Asia
ⓘ
surrender of Japan ⓘ |
| follows | atomic bombing of Hiroshima ⓘ |
| hasAltitudeOfDetonation | air burst above the city ⓘ |
| hasBelligerent |
United States of America
ⓘ
surface form:
United States
|
| hasCasualties | tens of thousands of deaths ⓘ |
| hasCity | Nagasaki ⓘ |
| hasCivilianCasualties | predominantly civilians ⓘ |
| hasCodeName | Fat Man ⓘ |
| hasCommandStructure |
United States government
ⓘ
United States Armed Forces ⓘ
surface form:
United States military
|
| hasCountry | Japan ⓘ |
| hasDate | 1945-08-09 ⓘ |
| hasDecisionMaker |
President Harry S. Truman
ⓘ
surface form:
Harry S. Truman
|
| hasImmediateDeathsEstimate | approximately 40000 to 75000 people ⓘ |
| hasLongTermEffects |
environmental contamination
ⓘ
genetic damage ⓘ increased cancer rates ⓘ radiation sickness ⓘ |
| hasMemorial |
Nagasaki Atomic Bomb Museum
ⓘ
Nagasaki Peace Park ⓘ |
| hasMonth | August 1945 ⓘ |
| hasOperator | United States Army Air Forces ⓘ |
| hasPrecededBy | Potsdam Declaration ⓘ |
| hasPrimaryTargetArea | Urakami district of Nagasaki ⓘ |
| hasRelatedEvent |
Soviet–Japanese War (1945)
ⓘ
surface form:
Soviet invasion of Manchuria
atomic bombing of Hiroshima ⓘ |
| hasSubjectOf |
ethical debate on nuclear weapons
ⓘ
historical debate on necessity of atomic bombings ⓘ war crime debate ⓘ |
| hasSurvivorTerm | hibakusha ⓘ |
| hasTargetCity | Nagasaki ⓘ |
| hasTargetCountry | Japan ⓘ |
| hasTheater |
Pacific War
ⓘ
surface form:
Pacific theater of World War II
|
| hasTimeOfDay | late morning local time ⓘ |
| hasTotalDeathsEstimate | approximately 60000 to 80000 people by end of 1945 ⓘ |
| hasWeaponType |
atomic bomb
ⓘ
nuclear weapon ⓘ |
| hasYear | 1945 ⓘ |
| partOf |
Allied strategic bombing of Japan
ⓘ
surface form:
Allied bombing of Japan
Pacific War ⓘ World War II ⓘ |
| usedAircraft |
B-29 Superfortress
ⓘ
Bockscar ⓘ |
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.
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.
Subject: atomic bombing of Nagasaki Description of subject: The atomic bombing of Nagasaki was the second nuclear attack carried out by the United States against Japan in August 1945, leading to massive civilian casualties and contributing to Japan’s surrender in World War II.
Referenced by (38)
Full triples — surface form annotated when it differs from this entity's canonical label.