W47 warhead
E437956
The W47 warhead was a compact American thermonuclear warhead designed primarily for deployment on Polaris submarine-launched ballistic missiles during the Cold War.
All labels observed (2)
| Label | Occurrences |
|---|---|
| W47 warhead canonical | 2 |
| W47 thermonuclear warhead | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4407890 — 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: W47 warhead Context triple: [U.S. thermonuclear weapons program, developedWeapon, W47 warhead]
-
A.
W76 thermonuclear warhead
The W76 thermonuclear warhead is a U.S. Navy submarine-launched ballistic missile warhead designed for strategic nuclear deterrence, featuring a compact design and variable-yield capabilities.
-
B.
BLU-109 bomb
The BLU-109 bomb is a U.S.-designed hardened-penetrator warhead used to destroy reinforced or deeply buried targets, often integrated into precision-guided munition systems.
-
C.
W88 thermonuclear warhead
The W88 thermonuclear warhead is a compact, high-yield U.S. nuclear warhead designed for deployment on submarine-launched ballistic missiles.
-
D.
Mk 84 bomb
The Mk 84 bomb is a 2,000-pound class general-purpose unguided bomb widely used by the U.S. and allied air forces as the warhead basis for various precision-guided munitions.
-
E.
Mk 83 bomb
The Mk 83 bomb is a 1,000-pound class general-purpose unguided aerial bomb widely used by military aircraft and often employed as the warhead for various precision-guided munition systems.
- 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: W47 warhead Target entity description: The W47 warhead was a compact American thermonuclear warhead designed primarily for deployment on Polaris submarine-launched ballistic missiles during the Cold War.
-
A.
W76 thermonuclear warhead
The W76 thermonuclear warhead is a U.S. Navy submarine-launched ballistic missile warhead designed for strategic nuclear deterrence, featuring a compact design and variable-yield capabilities.
-
B.
BLU-109 bomb
The BLU-109 bomb is a U.S.-designed hardened-penetrator warhead used to destroy reinforced or deeply buried targets, often integrated into precision-guided munition systems.
-
C.
W88 thermonuclear warhead
The W88 thermonuclear warhead is a compact, high-yield U.S. nuclear warhead designed for deployment on submarine-launched ballistic missiles.
-
D.
Mk 84 bomb
The Mk 84 bomb is a 2,000-pound class general-purpose unguided bomb widely used by the U.S. and allied air forces as the warhead basis for various precision-guided munitions.
-
E.
Mk 83 bomb
The Mk 83 bomb is a 1,000-pound class general-purpose unguided aerial bomb widely used by military aircraft and often employed as the warhead for various precision-guided munition systems.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
nuclear warhead variant
ⓘ
nuclear warhead variant ⓘ nuclear weapon ⓘ thermonuclear warhead ⓘ |
| associatedMissileSystem | Fleet Ballistic Missile system ⓘ |
| associatedProgram | Polaris SLBM program NERFINISHED ⓘ |
| compactDesign | true ⓘ |
| countryOfOrigin |
United States of America
ⓘ
surface form:
United States
|
| countryService | United States NERFINISHED ⓘ |
| deliveryMethod | submarine-launched ballistic missile ⓘ |
| deployedOn |
Ethan Allen-class submarine
NERFINISHED
ⓘ
George Washington-class submarine NERFINISHED ⓘ Lafayette-class submarine NERFINISHED ⓘ |
| deploymentEnvironment | submarine ⓘ |
| deploymentPlatform |
ballistic missile submarine
ⓘ
submarine-launched ballistic missile ⓘ |
| designer |
U.S. nuclear weapons laboratories
NERFINISHED
ⓘ
United States Atomic Energy Commission NERFINISHED ⓘ |
| designGoal |
compact size for SLBM use
ⓘ
high-yield thermonuclear capability ⓘ |
| deterrenceDoctrine | mutually assured destruction ⓘ |
| era | Cold War ⓘ |
| guidanceContext | ballistic trajectory ⓘ |
| historicalContext | early U.S. SLBM development ⓘ |
| launchPlatformType | nuclear-powered submarine ⓘ |
| nuclearStageCount | two ⓘ |
| nuclearWeaponType | two-stage thermonuclear ⓘ |
| primaryUse | sea-based nuclear deterrent ⓘ |
| propellantContext | solid-fueled missile system ⓘ |
| role | strategic deterrent ⓘ |
| serviceBranch | United States Navy Strategic Systems Programs NERFINISHED ⓘ |
| status | retired ⓘ |
| strategicRole | second-strike capability ⓘ |
| technologyDomain | nuclear weapons engineering ⓘ |
| theater | global strategic theater ⓘ |
| usedBy | United States Navy ⓘ |
| usedIn |
Polaris A-1 missile
NERFINISHED
ⓘ
Polaris A-2 missile NERFINISHED ⓘ Polaris A-3 missile NERFINISHED ⓘ UGM-27 Polaris missile NERFINISHED ⓘ |
| warheadClass | strategic thermonuclear warhead ⓘ |
| warheadFamily | U.S. W-series nuclear warheads NERFINISHED ⓘ |
| yieldVariant |
W47Y1
NERFINISHED
ⓘ
W47Y2 ⓘ |
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: W47 warhead Description of subject: The W47 warhead was a compact American thermonuclear warhead designed primarily for deployment on Polaris submarine-launched ballistic missiles during the Cold War.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
W47 thermonuclear warhead