Operation Fulcrum
E421547
Operation Fulcrum was a U.S. nuclear weapons test series conducted as part of the broader American nuclear testing program during the Cold War.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Operation Fulcrum canonical | 2 |
| Operation Fishbowl | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4080588 — 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: Operation Fulcrum Context triple: [United States nuclear weapons testing, hasPart, Operation Fulcrum]
-
A.
Operation Whirlwind
Operation Whirlwind was the codename for the large-scale Soviet military intervention that crushed the Hungarian Revolution of 1956 and reasserted Soviet control over Hungary.
-
B.
Operation Emery
Operation Emery was a series of underground nuclear tests conducted by the United States as part of its Cold War-era nuclear weapons development program.
-
C.
Operation Crossbow
Operation Crossbow was a World War II Allied campaign of intelligence, bombing, and reconnaissance aimed at locating and destroying German V-weapon (V-1 and V-2) research, production, and launch sites.
-
D.
Operation Fustian
Operation Fustian was a World War II Allied airborne assault in July 1943 aimed at capturing the Primosole Bridge in Sicily during the Allied invasion of the island.
-
E.
Operation Diadem
Operation Diadem was a major Allied offensive in Italy during World War II aimed at breaking the German Gustav Line and enabling the liberation of Rome.
- 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: Operation Fulcrum Target entity description: Operation Fulcrum was a U.S. nuclear weapons test series conducted as part of the broader American nuclear testing program during the Cold War.
-
A.
Operation Whirlwind
Operation Whirlwind was the codename for the large-scale Soviet military intervention that crushed the Hungarian Revolution of 1956 and reasserted Soviet control over Hungary.
-
B.
Operation Emery
Operation Emery was a series of underground nuclear tests conducted by the United States as part of its Cold War-era nuclear weapons development program.
-
C.
Operation Crossbow
Operation Crossbow was a World War II Allied campaign of intelligence, bombing, and reconnaissance aimed at locating and destroying German V-weapon (V-1 and V-2) research, production, and launch sites.
-
D.
Operation Fustian
Operation Fustian was a World War II Allied airborne assault in July 1943 aimed at capturing the Primosole Bridge in Sicily during the Allied invasion of the island.
-
E.
Operation Diadem
Operation Diadem was a major Allied offensive in Italy during World War II aimed at breaking the German Gustav Line and enabling the liberation of Rome.
- F. None of above. chosen
Statements (25)
| Predicate | Object |
|---|---|
| instanceOf |
United States nuclear weapons test series
ⓘ
nuclear weapons test series ⓘ |
| conflict | Cold War ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| era | Cold War ⓘ |
| followedBy | subsequent U.S. nuclear test series ⓘ |
| follows | previous U.S. nuclear test series ⓘ |
| hasPart |
atmospheric nuclear test
ⓘ
underground nuclear test ⓘ |
| location |
Nevada
ⓘ
Nevada Test Site ⓘ
linked to:
Nevada National Security Site
United States ⓘ
linked to:
United States of America
|
| participant |
United States Atomic Energy Commission
ⓘ
United States Department of Defense ⓘ
linked to:
Department of Defense
|
| partOf |
Cold War nuclear testing program
ⓘ
United States nuclear weapons testing program ⓘ
linked to:
United States nuclear weapons testing
|
| program | U.S. nuclear weapons program ⓘ |
| purpose |
nuclear weapons safety testing
ⓘ
weapons development ⓘ weapons effects research ⓘ |
| testedCapability |
nuclear yield optimization
ⓘ
weapon effects on military systems ⓘ weapon reliability ⓘ |
| testedTechnology |
fission weapon design
ⓘ
thermonuclear weapon design ⓘ |
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: Operation Fulcrum Description of subject: Operation Fulcrum was a U.S. nuclear weapons test series conducted as part of the broader American nuclear testing program during the Cold War.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Operation Fulcrum