W51 warhead
E868872
The W51 warhead was a planned but never deployed American thermonuclear warhead design developed during the Cold War.
All labels observed (1)
| Label | Occurrences |
|---|---|
| W51 warhead canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10223498 — 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: W51 warhead Context triple: [Nuclear bombs of the United States, hasPart, W51 warhead]
-
A.
W50 warhead
The W50 warhead is a compact, high-yield thermonuclear warhead developed by the United States during the Cold War, primarily used on the MGM-31 Pershing missile system.
-
B.
W56 warhead
The W56 warhead is a high-yield thermonuclear warhead developed by the United States during the Cold War, primarily deployed on Minuteman intercontinental ballistic missiles.
-
C.
W47 warhead
The W47 warhead was a compact American thermonuclear warhead designed primarily for deployment on Polaris submarine-launched ballistic missiles during the Cold War.
-
D.
W62 warhead
The W62 warhead is a U.S. thermonuclear warhead developed during the Cold War for use on intercontinental ballistic missiles, notably the Minuteman III.
-
E.
W78 warhead
The W78 warhead is an American MIRV-capable thermonuclear warhead designed for deployment on intercontinental ballistic missiles.
- 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: W51 warhead Target entity description: The W51 warhead was a planned but never deployed American thermonuclear warhead design developed during the Cold War.
-
A.
W50 warhead
The W50 warhead is a compact, high-yield thermonuclear warhead developed by the United States during the Cold War, primarily used on the MGM-31 Pershing missile system.
-
B.
W56 warhead
The W56 warhead is a high-yield thermonuclear warhead developed by the United States during the Cold War, primarily deployed on Minuteman intercontinental ballistic missiles.
-
C.
W47 warhead
The W47 warhead was a compact American thermonuclear warhead designed primarily for deployment on Polaris submarine-launched ballistic missiles during the Cold War.
-
D.
W62 warhead
The W62 warhead is a U.S. thermonuclear warhead developed during the Cold War for use on intercontinental ballistic missiles, notably the Minuteman III.
-
E.
W78 warhead
The W78 warhead is an American MIRV-capable thermonuclear warhead designed for deployment on intercontinental ballistic missiles.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
U.S. nuclear weapon design
ⓘ
thermonuclear warhead design ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| deploymentPlatform | ballistic missile (planned) ⓘ |
| deploymentStatus | never deployed ⓘ |
| designationSystem | U.S. military W-series nuclear warhead designation ⓘ |
| designStatus | design only ⓘ |
| developedBy |
United States
ⓘ
linked to:
United States of America
|
| developedDuring | Cold War ⓘ |
| developmentOutcome | program not completed ⓘ |
| era | Cold War era ⓘ |
| hasDesignFeature | two-stage thermonuclear principle (inferred for thermonuclear warheads) ⓘ |
| historicalContext | Cold War nuclear arms development ⓘ |
| isPartOf | United States nuclear weapons program ⓘ |
| militaryBranch |
United States military (planned)
ⓘ
linked to:
United States Armed Forces
|
| nuclearWeaponFamily | U.S. W-series warheads ⓘ |
| nuclearWeaponType | thermonuclear ⓘ |
| operationalUse | no operational deployment ⓘ |
| status |
canceled
ⓘ
planned only ⓘ |
| testStatus | not fielded ⓘ |
| usedAsWarheadFor | missile (planned) ⓘ |
| usedInConflict | none ⓘ |
| warheadClass | strategic nuclear warhead (likely intended role) ⓘ |
| weaponRole | nuclear deterrent (planned) ⓘ |
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: W51 warhead Description of subject: The W51 warhead was a planned but never deployed American thermonuclear warhead design developed during the Cold War.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.