Operation Ranger
E410902
Operation Ranger was a series of early U.S. atmospheric nuclear tests conducted in 1951 at the Nevada Test Site to advance weapons development during the Cold War.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Operation Ranger canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T4080565 — 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 Ranger Context triple: [United States nuclear weapons testing, hasPart, Operation Ranger]
-
A.
Operation Commando Hunt
Operation Commando Hunt was a major U.S. Air Force bombing campaign during the Vietnam War aimed at disrupting North Vietnamese supply routes along the Ho Chi Minh Trail, much of which ran through Laos.
-
B.
Operation Spring
Operation Spring was a Canadian-led World War II offensive in July 1944 aimed at capturing key positions south of Caen during the Normandy campaign.
-
C.
Operation Detachment
Operation Detachment was the U.S. amphibious assault campaign in World War II aimed at capturing the strategically vital island of Iwo Jima from Japan.
-
D.
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.
-
E.
Operation Cottage
Operation Cottage was a World War II Allied amphibious landing and occupation of Kiska Island in the Aleutians, notable for encountering an unexpectedly evacuated Japanese garrison yet still suffering casualties from friendly fire and accidents.
- 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 Ranger Target entity description: Operation Ranger was a series of early U.S. atmospheric nuclear tests conducted in 1951 at the Nevada Test Site to advance weapons development during the Cold War.
-
A.
Operation Commando Hunt
Operation Commando Hunt was a major U.S. Air Force bombing campaign during the Vietnam War aimed at disrupting North Vietnamese supply routes along the Ho Chi Minh Trail, much of which ran through Laos.
-
B.
Operation Spring
Operation Spring was a Canadian-led World War II offensive in July 1944 aimed at capturing key positions south of Caen during the Normandy campaign.
-
C.
Operation Detachment
Operation Detachment was the U.S. amphibious assault campaign in World War II aimed at capturing the strategically vital island of Iwo Jima from Japan.
-
D.
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.
-
E.
Operation Cottage
Operation Cottage was a World War II Allied amphibious landing and occupation of Kiska Island in the Aleutians, notable for encountering an unexpectedly evacuated Japanese garrison yet still suffering casualties from friendly fire and accidents.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
United States military operation
ⓘ
nuclear test series ⓘ |
| category |
1951 in military history
ⓘ
Cold War military operations of the United States ⓘ Nuclear weapons testing of the United States ⓘ |
| codenameOfTest |
Able
ⓘ
Baker-1 ⓘ Baker ⓘ
surface form:
Baker-2
Easy ⓘ Fox ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| countryOfTestSite |
United States of America
ⓘ
surface form:
United States
|
| detonationHeight | airburst ⓘ |
| endDate | 1951-02-06 ⓘ |
| era | Cold War ⓘ |
| followedBy | Operation Greenhouse ⓘ |
| governingBody | United States government ⓘ |
| hasEffect | contributed to development of more efficient nuclear weapons ⓘ |
| location |
Nevada National Security Site
ⓘ
surface form:
Nevada Test Site
|
| maximumYield | 22 kilotons of TNT ⓘ |
| militaryBranchInvolved | United States Air Force ⓘ |
| minimumYield | 1 kiloton of TNT ⓘ |
| notableFeature | first series of nuclear tests conducted at the Nevada Test Site ⓘ |
| numberOfTests | 5 ⓘ |
| objective |
evaluate new implosion-type nuclear weapon designs
ⓘ
study blast and thermal effects of nuclear explosions ⓘ |
| operator |
United States Atomic Energy Commission
ⓘ
Department of Defense ⓘ
surface form:
United States Department of Defense
|
| partOf |
United States nuclear weapons testing
ⓘ
surface form:
United States nuclear weapons testing program
|
| precededBy | Operation Sandstone ⓘ |
| purpose |
nuclear weapons design improvement
ⓘ
weapons development ⓘ |
| result | data used to refine subsequent U.S. nuclear test series ⓘ |
| risk | radioactive fallout in surrounding regions ⓘ |
| safetyConsideration | conducted at remote desert location ⓘ |
| startDate | 1951-01-27 ⓘ |
| state | Nevada ⓘ |
| status | completed ⓘ |
| testDeliveryMethod | aircraft airdrop ⓘ |
| testEnvironment | atmosphere ⓘ |
| testSeriesNumberAtNevada | 1 ⓘ |
| testSite |
Nevada National Security Site
ⓘ
surface form:
Nevada Test Site
|
| testType |
airdrop test
ⓘ
atmospheric nuclear test ⓘ |
| timePeriod | 1951 ⓘ |
| weaponTypeTested |
fission weapon
ⓘ
implosion-type device ⓘ |
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 Ranger Description of subject: Operation Ranger was a series of early U.S. atmospheric nuclear tests conducted in 1951 at the Nevada Test Site to advance weapons development during the Cold War.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.