Operation Dewey Canyon II
E558493
Operation Dewey Canyon II was a 1971 U.S. Army operation during the Vietnam War, conducted in support of the South Vietnamese incursion into Laos known as Operation Lam Son 719.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Operation Dewey Canyon II canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5979081 — 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 Dewey Canyon II Context triple: [Quang Tri Province, siteOf, Operation Dewey Canyon II]
-
A.
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.
-
B.
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.
-
C.
Operation Tuleta
Operation Tuleta was a British police investigation into alleged computer hacking and related privacy breaches linked to the wider News International phone hacking scandal.
-
D.
Operation Fulcrum
Operation Fulcrum was a U.S. nuclear weapons test series conducted as part of the broader American nuclear testing program during the Cold War.
-
E.
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.
- 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 Dewey Canyon II Target entity description: Operation Dewey Canyon II was a 1971 U.S. Army operation during the Vietnam War, conducted in support of the South Vietnamese incursion into Laos known as Operation Lam Son 719.
-
A.
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.
-
B.
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.
-
C.
Operation Tuleta
Operation Tuleta was a British police investigation into alleged computer hacking and related privacy breaches linked to the wider News International phone hacking scandal.
-
D.
Operation Fulcrum
Operation Fulcrum was a U.S. nuclear weapons test series conducted as part of the broader American nuclear testing program during the Cold War.
-
E.
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.
- F. None of above. chosen
Statements (34)
| Predicate | Object |
|---|---|
| instanceOf | military operation ⓘ |
| belligerent |
Army of the Republic of Vietnam
ⓘ
United States Army ⓘ |
| commander | Lieutenant General James W. Sutherland ⓘ |
| commandStructure | XXIV Corps ⓘ |
| conflict | Vietnam War ⓘ |
| country |
United States
ⓘ
linked to:
United States of America
|
| endDate | 1971-03-25 ⓘ |
| hasCodenameNumber | II ⓘ |
| location |
Khe Sanh
ⓘ
Quang Tri Province ⓘ Route 9 ⓘ South Vietnam ⓘ |
| notableFeature |
conducted in conjunction with a major South Vietnamese incursion into Laos
ⓘ
involved reopening a previously abandoned combat base at Khe Sanh ⓘ |
| objective |
provide logistical and artillery support for ARVN forces in Laos
ⓘ
reopen Route 9 from Ca Lu to the Laotian border ⓘ secure Khe Sanh Combat Base ⓘ |
| opponent | People's Army of Vietnam ⓘ |
| partOf | Vietnam War ⓘ |
| precededBy | Operation Dewey Canyon ⓘ |
| relatedTo |
Operation Dewey Canyon
ⓘ
Operation Lam Son 719 ⓘ |
| result |
Khe Sanh Combat Base was reoccupied and used as a logistics hub
ⓘ
linked to:
Khe Sanh
U.S. forces successfully reopened Route 9 to the Laotian border ⓘ |
| startDate | 1971-02-08 ⓘ |
| supportedOperation | Operation Lam Son 719 ⓘ |
| supportRole |
artillery support for ARVN units in Laos
ⓘ
logistical support for cross-border incursion into Laos ⓘ |
| theater |
I Corps Tactical Zone
ⓘ
linked to:
I Corps Tactical Zone, South Vietnam
|
| typeOfWarfare | ground operation ⓘ |
| usedBase |
Khe Sanh Combat Base
ⓘ
linked to:
Khe Sanh
Quang Tri ⓘ
linked to:
Quang Tri Province
|
| year | 1971 ⓘ |
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 Dewey Canyon II Description of subject: Operation Dewey Canyon II was a 1971 U.S. Army operation during the Vietnam War, conducted in support of the South Vietnamese incursion into Laos known as Operation Lam Son 719.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.