Operation Anvil
E414476
Operation Anvil was a series of U.S. underground nuclear tests conducted during the Cold War as part of the broader American nuclear weapons development program.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Operation Anvil canonical | 1 |
| Operation Anvil (U.S. Navy version) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4080587 — 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 Anvil Context triple: [United States nuclear weapons testing, hasPart, Operation Anvil]
-
A.
Operation Grommet
Operation Grommet was a series of U.S. underground nuclear tests conducted during the Cold War as part of the broader American nuclear weapons development program.
-
B.
Operation Halberd
Operation Halberd was a major British Royal Navy convoy operation in September 1941 to escort vital supplies to Malta through heavy Axis air and naval opposition in the Mediterranean.
-
C.
Operation Infatuate
Operation Infatuate was a World War II Allied amphibious assault in November 1944 aimed at capturing the heavily fortified Dutch island of Walcheren to secure access to the port of Antwerp.
-
D.
Operation Charnwood
Operation Charnwood was a World War II Allied offensive in July 1944 aimed at capturing the northern part of Caen during the Normandy campaign.
-
E.
Operation Weeting
Operation Weeting was a major Metropolitan Police investigation into widespread phone hacking by journalists at the now-defunct News of the World newspaper.
- 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 Anvil Target entity description: Operation Anvil was a series of U.S. underground nuclear tests conducted during the Cold War as part of the broader American nuclear weapons development program.
-
A.
Operation Grommet
Operation Grommet was a series of U.S. underground nuclear tests conducted during the Cold War as part of the broader American nuclear weapons development program.
-
B.
Operation Halberd
Operation Halberd was a major British Royal Navy convoy operation in September 1941 to escort vital supplies to Malta through heavy Axis air and naval opposition in the Mediterranean.
-
C.
Operation Infatuate
Operation Infatuate was a World War II Allied amphibious assault in November 1944 aimed at capturing the heavily fortified Dutch island of Walcheren to secure access to the port of Antwerp.
-
D.
Operation Charnwood
Operation Charnwood was a World War II Allied offensive in July 1944 aimed at capturing the northern part of Caen during the Normandy campaign.
-
E.
Operation Weeting
Operation Weeting was a major Metropolitan Police investigation into widespread phone hacking by journalists at the now-defunct News of the World newspaper.
- F. None of above. chosen
Statements (29)
| Predicate | Object |
|---|---|
| instanceOf |
United States nuclear test series
ⓘ
series of nuclear tests ⓘ |
| associatedWith |
United States Air Force
ⓘ
United States nuclear weapons complex ⓘ
surface form:
United States nuclear weapons laboratories
|
| conflictContext | Cold War ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| era | 20th century ⓘ |
| followedBy | Operation Latchkey ⓘ |
| location |
Nevada
ⓘ
Nevada Test Site NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| nuclearTestProgram | United States nuclear testing program ⓘ |
| operator |
United States Atomic Energy Commission
ⓘ
Department of Defense ⓘ
surface form:
United States Department of Defense
|
| partOf |
Cold War nuclear testing
ⓘ
United States nuclear weapons development program NERFINISHED ⓘ |
| precededBy | Operation Flintlock ⓘ |
| purpose |
nuclear weapons development
ⓘ
weapons design refinement ⓘ weapons effects testing ⓘ |
| safetyConsideration | containment of radioactive fallout ⓘ |
| testEnvironment | underground ⓘ |
| testMethod |
shaft test
ⓘ
tunnel test ⓘ |
| testSeriesOf | nuclear devices ⓘ |
| testSite | Nevada Test Site NERFINISHED ⓘ |
| testType | underground nuclear test ⓘ |
| weaponTypeTested |
fission weapons
ⓘ
thermonuclear weapons ⓘ |
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 Anvil Description of subject: Operation Anvil was a series of U.S. underground nuclear tests conducted during the Cold War as part of the broader American nuclear weapons development program.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Operation Aphrodite
this entity surface form:
Operation Anvil (U.S. Navy version)