atomic bombing of Hiroshima
E1059
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.
All labels observed (8)
| Label | Occurrences |
|---|---|
| atomic bombing of Hiroshima canonical | 33 |
| Atomic bombing of Hiroshima | 3 |
| Hiroshima atomic bombing | 3 |
| Little Boy | 2 |
| Little Boy atomic bomb | 2 |
| Hiroshima bombing | 1 |
| atomic bombing of Hiroshima on 6 August 1945 | 1 |
| bombing of Hiroshima | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T17960 — 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: atomic bombing of Hiroshima Context triple: [Manhattan Project, usedInEvent, atomic bombing of Hiroshima]
-
A.
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.
-
B.
Manhattan Project
The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
-
C.
Operation Gomorrah
Operation Gomorrah was a series of devastating Allied bombing raids on Hamburg in 1943 that caused massive destruction and civilian casualties.
-
D.
World War II
World War II was a global conflict from 1939 to 1945 involving most of the world’s nations, marked by unprecedented destruction, the Holocaust, and the use of atomic weapons, and resulting in a major reshaping of the international order.
-
E.
Pacific War
The Pacific War was the major theater of World War II in Asia and the Pacific, marked by naval and island campaigns between the Allied powers and Japan from 1941 to 1945.
- 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: atomic bombing of Hiroshima Target entity description: 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.
-
A.
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.
-
B.
Manhattan Project
The Manhattan Project was the secret U.S.-led World War II research and development program that produced the first nuclear weapons.
-
C.
Operation Gomorrah
Operation Gomorrah was a series of devastating Allied bombing raids on Hamburg in 1943 that caused massive destruction and civilian casualties.
-
D.
World War II
World War II was a global conflict from 1939 to 1945 involving most of the world’s nations, marked by unprecedented destruction, the Holocaust, and the use of atomic weapons, and resulting in a major reshaping of the international order.
-
E.
Pacific War
The Pacific War was the major theater of World War II in Asia and the Pacific, marked by naval and island campaigns between the Allied powers and Japan from 1941 to 1945.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
event in World War II
ⓘ
mass killing ⓘ nuclear attack ⓘ war crime allegation subject ⓘ |
| aircraft | Enola Gay ⓘ |
| aircraftType |
Enola Gay
ⓘ
surface form:
B-29 Superfortress
|
| authorizedBy |
President Harry S. Truman
ⓘ
surface form:
Harry S. Truman
|
| belligerent |
Japan
ⓘ
surface form:
Empire of Japan
United States of America ⓘ
surface form:
United States
|
| commander | Paul W. Tibbets Jr. ⓘ |
| conflict |
Pacific War
ⓘ
World War II ⓘ |
| controversial | true ⓘ |
| country | Japan ⓘ |
| date | 1945-08-06 ⓘ |
| fatalitiesEstimate |
70000–80000 immediate deaths
ⓘ
approximately 140000 deaths by end of 1945 ⓘ |
| firstUseOf | nuclear weapon in war ⓘ |
| followedBy | atomic bombing of Nagasaki ⓘ |
| hasParticipant |
Japan
ⓘ
surface form:
Empire of Japan
United States of America ⓘ
surface form:
United States
|
| impact |
beginning of the nuclear age
ⓘ
long-term radiation health effects on survivors ⓘ prompted global anti-nuclear movements ⓘ |
| injuriesEstimate | 70000 or more injured ⓘ |
| legalStatusDebate | subject of international law and ethics debates ⓘ |
| location | Hiroshima ⓘ |
| memorializedBy |
Genbaku Dome
ⓘ
Genbaku Dome ⓘ
surface form:
Hiroshima Peace Memorial Park
|
| operator | United States Army Air Forces ⓘ |
| partOf |
Pacific War
ⓘ
World War II ⓘ |
| partOfCampaign | Allied strategic bombing of Japan ⓘ |
| perpetrator | United States Army Air Forces ⓘ |
| placeOfDetonation |
Hiroshima
ⓘ
surface form:
Hiroshima, Honshu, Japan
|
| radiusOfSevereDestruction | about 1.6 kilometers ⓘ |
| result |
accelerated Japanese surrender in World War II
ⓘ
large-scale civilian casualties ⓘ massive destruction of Hiroshima ⓘ |
| subjectOf | Hiroshima Peace Memorial Museum exhibits ⓘ |
| survivorTerm | hibakusha ⓘ |
| target |
Hiroshima
ⓘ
surface form:
Hiroshima city center
military-industrial facilities in Hiroshima ⓘ |
| time | 08:15 JST ⓘ |
| timeZone | Japan Standard Time ⓘ |
| usedWeapon |
atomic bombing of Hiroshima
self-linksurface differs
ⓘ
surface form:
Little Boy
gun-type fission bomb ⓘ |
| usedWeaponType | uranium-235 nuclear bomb ⓘ |
| year | 1945 ⓘ |
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: atomic bombing of Hiroshima Description of subject: 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.
Referenced by (46)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Little Boy
this entity surface form:
Little Boy
this entity surface form:
Hiroshima bombing
subject surface form:
Shōwa era
this entity surface form:
Atomic bombing of Hiroshima
subject surface form:
Manhattan Engineer District
this entity surface form:
Little Boy atomic bomb
this entity surface form:
Little Boy atomic bomb
this entity surface form:
Atomic bombing of Hiroshima
this entity surface form:
Atomic bombing of Hiroshima
subject surface form:
Theodore Van Kirk
subject surface form:
Thomas Ferebee
subject surface form:
Thomas Ferebee
this entity surface form:
bombing of Hiroshima
Allied operations in the Pacific Theater of World War II
→
decisiveEvent
→
atomic bombing of Hiroshima
ⓘ
this entity surface form:
atomic bombing of Hiroshima on 6 August 1945
this entity surface form:
Hiroshima atomic bombing
this entity surface form:
Hiroshima atomic bombing
this entity surface form:
Hiroshima atomic bombing
subject surface form:
Robert A. Lewis
subject surface form:
Enola Gay