Mark 53 nuclear bomb
E865252
The Mark 53 was a high-yield thermonuclear gravity bomb developed by the United States during the Cold War, notable for its powerful destructive capability and deployment on strategic bombers.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mark 53 nuclear bomb canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10223477 — 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: Mark 53 nuclear bomb Context triple: [Nuclear bombs of the United States, hasPart, Mark 53 nuclear bomb]
-
A.
Mark 39 nuclear bomb
The Mark 39 nuclear bomb was an early U.S. thermonuclear weapon deployed during the Cold War, best known for the 1961 Goldsboro incident in which two of these bombs were accidentally dropped over North Carolina, nearly causing a catastrophic detonation.
-
B.
Mark 36 nuclear bomb
The Mark 36 nuclear bomb was a high-yield thermonuclear gravity bomb developed and deployed by the United States during the early Cold War era.
-
C.
Mark 5 nuclear bomb
The Mark 5 nuclear bomb was an early American fission weapon developed in the 1950s, notable for its relatively compact, gun-type design and use in various U.S. military delivery systems during the early Cold War.
-
D.
Mark 4 nuclear bomb
The Mark 4 nuclear bomb was an early U.S. post–World War II fission weapon derived from the Fat Man design and used during the early Cold War.
-
E.
Mark 3 nuclear bomb
The Mark 3 nuclear bomb was an early U.S. atomic weapon, a production version of the "Fat Man" design used at the end of World War II.
- 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: Mark 53 nuclear bomb Target entity description: The Mark 53 was a high-yield thermonuclear gravity bomb developed by the United States during the Cold War, notable for its powerful destructive capability and deployment on strategic bombers.
-
A.
Mark 39 nuclear bomb
The Mark 39 nuclear bomb was an early U.S. thermonuclear weapon deployed during the Cold War, best known for the 1961 Goldsboro incident in which two of these bombs were accidentally dropped over North Carolina, nearly causing a catastrophic detonation.
-
B.
Mark 36 nuclear bomb
The Mark 36 nuclear bomb was a high-yield thermonuclear gravity bomb developed and deployed by the United States during the early Cold War era.
-
C.
Mark 5 nuclear bomb
The Mark 5 nuclear bomb was an early American fission weapon developed in the 1950s, notable for its relatively compact, gun-type design and use in various U.S. military delivery systems during the early Cold War.
-
D.
Mark 4 nuclear bomb
The Mark 4 nuclear bomb was an early U.S. post–World War II fission weapon derived from the Fat Man design and used during the early Cold War.
-
E.
Mark 3 nuclear bomb
The Mark 3 nuclear bomb was an early U.S. atomic weapon, a production version of the "Fat Man" design used at the end of World War II.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
gravity bomb
ⓘ
thermonuclear bomb ⓘ |
| category |
U.S. Cold War nuclear weapons
ⓘ
strategic nuclear bombs ⓘ |
| conflict | Cold War ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| decommissioned | 1990s ⓘ |
| deliveryMethod | air-dropped ⓘ |
| deploymentPlatform |
B-36 Peacemaker
NERFINISHED
ⓘ
B-47 Stratojet NERFINISHED ⓘ B-52 Stratofortress NERFINISHED ⓘ B-58 Hustler NERFINISHED ⓘ strategic bomber ⓘ |
| designedFor | strategic deterrence ⓘ |
| designOrigin | TX-53 design ⓘ |
| destructiveCapability | city-scale destruction ⓘ |
| developedBy | United States NERFINISHED ⓘ |
| diameter | approximately 1.3 meters ⓘ |
| era | Cold War ⓘ |
| fuzingOptions |
air burst
ⓘ
ground burst ⓘ |
| guidance | unguided ⓘ |
| inServiceDuring |
1960s
ⓘ
1970s ⓘ 1980s ⓘ 1990s ⓘ |
| introduced | early 1960s ⓘ |
| lastUnitsRetired | 1997 ⓘ |
| length | approximately 3.7 meters ⓘ |
| notableCharacteristic |
designed for delivery by long-range strategic bombers
ⓘ
one of the highest-yield U.S. nuclear bombs ever deployed ⓘ |
| nuclearWeaponType | thermonuclear ⓘ |
| replaced | earlier high-yield U.S. gravity bombs ⓘ |
| replacedBy |
B61 nuclear bomb
NERFINISHED
ⓘ
B83 nuclear bomb NERFINISHED ⓘ |
| role |
city-busting weapon
ⓘ
strategic nuclear weapon ⓘ |
| safetyFeatures |
environmental sensing devices
ⓘ
strong-link weak-link safety design ⓘ |
| serviceEntry | 1962 ⓘ |
| serviceRetirement | 1997 ⓘ |
| storageConfiguration | stored in U.S. nuclear weapons stockpile ⓘ |
| usedBy |
United States Air Force
ⓘ
United States Navy ⓘ |
| warheadType | two-stage thermonuclear ⓘ |
| weight | approximately 4000 kilograms ⓘ |
| yield | 9 megatons of TNT ⓘ |
| yieldClass | multi-megaton ⓘ |
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: Mark 53 nuclear bomb Description of subject: The Mark 53 was a high-yield thermonuclear gravity bomb developed by the United States during the Cold War, notable for its powerful destructive capability and deployment on strategic bombers.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.