Operation Grommet
E412152
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.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Operation Grommet canonical | 3 |
| Operation Grenadier | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4080585 — 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 Grommet Context triple: [United States nuclear weapons testing, hasPart, Operation Grommet]
-
A.
Operation Paukenschlag
Operation Paukenschlag was a World War II German U-boat campaign in early 1942 that targeted Allied shipping along the North American east coast, causing heavy losses.
-
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 Z
Operation Z was the Imperial Japanese Navy’s codename for the 1941 carrier-based attack plan on Pearl Harbor that launched Japan into war with the United States in World War II.
-
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 Koltso
Operation Koltso was the final Soviet offensive in early 1943 that encircled and destroyed the remaining German 6th Army at Stalingrad, effectively ending the battle.
- 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 Grommet Target entity description: 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.
-
A.
Operation Paukenschlag
Operation Paukenschlag was a World War II German U-boat campaign in early 1942 that targeted Allied shipping along the North American east coast, causing heavy losses.
-
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 Z
Operation Z was the Imperial Japanese Navy’s codename for the 1941 carrier-based attack plan on Pearl Harbor that launched Japan into war with the United States in World War II.
-
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 Koltso
Operation Koltso was the final Soviet offensive in early 1943 that encircled and destroyed the remaining German 6th Army at Stalingrad, effectively ending the battle.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
United States nuclear test series
ⓘ
series of nuclear tests ⓘ |
| aimedAt |
improving nuclear warhead designs
ⓘ
validating weapons effects calculations ⓘ |
| conflict | Cold War ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| endDate | 1970-10-29 ⓘ |
| era | Cold War ⓘ |
| followedBy | Operation Toggle ⓘ |
| hasPart |
Operation Greenhouse
ⓘ
surface form:
Benham nuclear test
Duryea nuclear test ⓘ Huron King nuclear test ⓘ Milrow nuclear test ⓘ |
| location | Nevada Test Site NERFINISHED ⓘ |
| nuclearTestSeriesOf |
United States of America
ⓘ
surface form:
United States
|
| numberOfTests | 36 ⓘ |
| operator |
United States Atomic Energy Commission
ⓘ
Department of Defense ⓘ
surface form:
United States Department of Defense
|
| partOf |
Cold War nuclear arms race
ⓘ
United States nuclear weapons development program ⓘ |
| precededBy | Operation Emery ⓘ |
| program | United States nuclear weapons program ⓘ |
| purpose |
weapons development
ⓘ
weapons effects research ⓘ |
| regime | post-Limited Test Ban Treaty testing regime ⓘ |
| startDate | 1969-09-14 ⓘ |
| subjectOf | United States Department of Energy nuclear test reports ⓘ |
| testEnvironment | underground ⓘ |
| testMedium |
underground shaft
ⓘ
underground tunnel ⓘ |
| testSite |
Area 10 of the Nevada Test Site
NERFINISHED
ⓘ
Area 12 of the Nevada Test Site NERFINISHED ⓘ Area 15 of the Nevada Test Site NERFINISHED ⓘ Area 16 of the Nevada Test Site NERFINISHED ⓘ Area 18 of the Nevada Test Site NERFINISHED ⓘ Area 19 of the Nevada Test Site NERFINISHED ⓘ Area 2 of the Nevada Test Site NERFINISHED ⓘ Area 20 of the Nevada Test Site NERFINISHED ⓘ Area 3 of the Nevada Test Site NERFINISHED ⓘ Area 4 of the Nevada Test Site NERFINISHED ⓘ Area 6 of the Nevada Test Site NERFINISHED ⓘ Area 7 of the Nevada Test Site NERFINISHED ⓘ Area 8 of the Nevada Test Site NERFINISHED ⓘ Area 9 of the Nevada Test Site NERFINISHED ⓘ |
| testType | underground nuclear test ⓘ |
| treatyContext |
Partial Nuclear Test Ban Treaty
ⓘ
surface form:
Limited Test Ban Treaty
|
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 Grommet Description of subject: 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.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Operation Grenadier