Mark 8 nuclear bomb
E850516
The Mark 8 was an early American nuclear bomb design, notable as a gun-type fission weapon developed in the early Cold War era.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Mark 8 nuclear bomb canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10223463 — 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 8 nuclear bomb Context triple: [Nuclear bombs of the United States, hasPart, Mark 8 nuclear bomb]
-
A.
B83 nuclear bomb
The B83 nuclear bomb is a high-yield U.S. thermonuclear gravity bomb designed for strategic deployment by bomber aircraft.
-
B.
B41 nuclear bomb
The B41 nuclear bomb was a high-yield, Cold War–era American thermonuclear gravity bomb and one of the most powerful nuclear weapons ever deployed by the United States.
-
C.
Mark 17 thermonuclear bomb
The Mark 17 thermonuclear bomb was one of the first operational U.S. hydrogen bombs, a large-yield, early Cold War-era strategic nuclear weapon.
-
D.
B53 nuclear bomb
The B53 nuclear bomb was a high-yield, Cold War–era U.S. thermonuclear gravity bomb designed for strategic deterrence and bunker-busting missions.
-
E.
B61 nuclear bomb
The B61 nuclear bomb is a U.S. thermonuclear gravity bomb that has served as a key component of NATO and U.S. strategic and tactical nuclear arsenals since the 1960s.
- 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 8 nuclear bomb Target entity description: The Mark 8 was an early American nuclear bomb design, notable as a gun-type fission weapon developed in the early Cold War era.
-
A.
B83 nuclear bomb
The B83 nuclear bomb is a high-yield U.S. thermonuclear gravity bomb designed for strategic deployment by bomber aircraft.
-
B.
B41 nuclear bomb
The B41 nuclear bomb was a high-yield, Cold War–era American thermonuclear gravity bomb and one of the most powerful nuclear weapons ever deployed by the United States.
-
C.
Mark 17 thermonuclear bomb
The Mark 17 thermonuclear bomb was one of the first operational U.S. hydrogen bombs, a large-yield, early Cold War-era strategic nuclear weapon.
-
D.
B53 nuclear bomb
The B53 nuclear bomb was a high-yield, Cold War–era U.S. thermonuclear gravity bomb designed for strategic deterrence and bunker-busting missions.
-
E.
B61 nuclear bomb
The B61 nuclear bomb is a U.S. thermonuclear gravity bomb that has served as a key component of NATO and U.S. strategic and tactical nuclear arsenals since the 1960s.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
gun-type fission weapon
ⓘ
nuclear weapon ⓘ |
| classification | gravity bomb ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| deliveryMethod | air-dropped bomb ⓘ |
| deliveryPlatform | strategic bomber aircraft ⓘ |
| deployment |
U.S. Air Force
ⓘ
linked to:
United States Air Force
U.S. nuclear stockpile ⓘ |
| designAuthority |
U.S. nuclear weapons laboratories
ⓘ
linked to:
United States nuclear weapons complex
|
| designedToAttack |
fortified underground structures
ⓘ
hardened targets ⓘ |
| designGoal | penetration before detonation ⓘ |
| designLineage | derived from wartime gun-type concepts ⓘ |
| designPeriod | late 1940s ⓘ |
| designType | gun-type ⓘ |
| developedBy |
United States
ⓘ
linked to:
United States of America
|
| era | early Cold War ⓘ |
| feature |
armor-piercing design
ⓘ
earth-penetrating capability ⓘ |
| governingBody |
U.S. Atomic Energy Commission
ⓘ
linked to:
United States Atomic Energy Commission
|
| historicalSignificance | early postwar U.S. nuclear bomb design ⓘ |
| intendedUse | tactical nuclear weapon ⓘ |
| militaryBranchUser | United States Air Force ⓘ |
| nuclearPhysicsPrinciple | rapid assembly of supercritical mass ⓘ |
| nuclearWeaponType | fission bomb ⓘ |
| predecessor | Little Boy ⓘ |
| program | U.S. nuclear weapons program ⓘ |
| relatedConcept | earth-penetrating nuclear weapon ⓘ |
| relatedWeapon | Mark 11 nuclear bomb ⓘ |
| retired | 1950s ⓘ |
| riskFactor | inherent safety concerns of gun-type designs ⓘ |
| role | bunker-busting nuclear bomb ⓘ |
| safetyCharacteristic | relatively simple gun-type mechanism ⓘ |
| serviceEntry | early 1950s ⓘ |
| status |
obsolete
ⓘ
retired ⓘ |
| supersededBy | more advanced tactical nuclear weapons ⓘ |
| technologyGeneration | second generation U.S. nuclear weapon ⓘ |
| testing | associated with U.S. nuclear test program ⓘ |
| usedConventionalExplosives | high explosives ⓘ |
| usedFissileMaterial |
highly enriched uranium
ⓘ
plutonium ⓘ |
| usedInConflict | never used in combat ⓘ |
| warheadConfiguration | armor-piercing casing ⓘ |
| warheadDesignation | W8 ⓘ |
| warheadType | implosion-free gun-assembly ⓘ |
| yieldClass | low to medium kiloton range ⓘ |
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 8 nuclear bomb Description of subject: The Mark 8 was an early American nuclear bomb design, notable as a gun-type fission weapon developed in the early Cold War era.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.