Operation Matterhorn
E203806
Operation Matterhorn was a World War II U.S. Army Air Forces strategic bombing campaign that used B-29 Superfortresses based in India and China to strike industrial and military targets in Japan.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Operation Matterhorn canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1823317 — 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 Matterhorn Context triple: [Twentieth Air Force, operation, Operation Matterhorn]
-
A.
Operation Edelweiss
Operation Edelweiss was the German World War II campaign aimed at capturing the oil fields of the Caucasus to secure vital fuel supplies for the Nazi war effort.
-
B.
Operation Helvetic
Operation Helvetic is the British Army’s long-term peacekeeping and security operation in Northern Ireland that succeeded Operation Banner.
-
C.
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.
-
D.
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.
-
E.
Operation Anadyr
Operation Anadyr was the secret Soviet military plan in 1962 to deploy nuclear missiles and other forces to Cuba, triggering the Cuban Missile Crisis.
- 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 Matterhorn Target entity description: Operation Matterhorn was a World War II U.S. Army Air Forces strategic bombing campaign that used B-29 Superfortresses based in India and China to strike industrial and military targets in Japan.
-
A.
Operation Edelweiss
Operation Edelweiss was the German World War II campaign aimed at capturing the oil fields of the Caucasus to secure vital fuel supplies for the Nazi war effort.
-
B.
Operation Helvetic
Operation Helvetic is the British Army’s long-term peacekeeping and security operation in Northern Ireland that succeeded Operation Banner.
-
C.
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.
-
D.
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.
-
E.
Operation Anadyr
Operation Anadyr was the secret Soviet military plan in 1962 to deploy nuclear missiles and other forces to Cuba, triggering the Cuban Missile Crisis.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
military operation
ⓘ
strategic bombing campaign ⓘ |
| aircraftRole | very heavy bomber operations ⓘ |
| airUnit |
40th Bombardment Group
ⓘ
444th Bombardment Group ⓘ 462d Bombardment Group ⓘ 468th Bombardment Group ⓘ 58th Bombardment Wing ⓘ |
| basedOn | B-29 deployment to China and India ⓘ |
| codename | Matterhorn ⓘ |
| commander |
Curtis LeMay
ⓘ
Kenneth B. Wolfe ⓘ |
| conflict | World War II ⓘ |
| country | United States of America ⓘ |
| endTime | 1945 ⓘ |
| hasPart | XX Bomber Command ⓘ |
| headquarters | XX Bomber Command ⓘ |
| historicalPeriod | 1940s ⓘ |
| location |
China
ⓘ
India ⓘ Japan ⓘ |
| logisticalChallenge |
airlift of fuel and bombs over the Himalayas
ⓘ
dependence on Hump airlift ⓘ |
| militaryBranch |
United States Army Air Forces Twentieth Air Force
ⓘ
linked to:
Twentieth Air Force
|
| notableAttack |
bombing of Yawata steel works
ⓘ
first B-29 raid on the Japanese home islands ⓘ |
| notableFeature | first combat use of B-29 Superfortress against Japan ⓘ |
| objective |
attack on Japanese home islands
ⓘ
strategic bombing of Japanese industrial targets ⓘ strategic bombing of Japanese military targets ⓘ |
| operator | United States Army Air Forces ⓘ |
| partOf |
Pacific War
ⓘ
air war against Japan ⓘ |
| reasonForEnd | shift of B-29 operations to Marianas bases ⓘ |
| replacedBy | Marianas-based B-29 bombing campaign ⓘ |
| result |
high logistical cost
ⓘ
limited strategic effect ⓘ |
| startTime | 1944 ⓘ |
| strategicConcept | long-range bombing from peripheral bases ⓘ |
| subordinateTo | Twentieth Air Force ⓘ |
| supplyRoute | The Hump ⓘ |
| target |
Japanese aircraft industry
ⓘ
Japanese military facilities ⓘ Japanese steel industry ⓘ Yawata NERFINISHED ⓘ |
| theater |
China-Burma-India Theater
ⓘ
linked to:
China Burma India Theater
|
| uses |
B-29 Superfortress
ⓘ
forward bases in China ⓘ main bases in India ⓘ |
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 Matterhorn Description of subject: Operation Matterhorn was a World War II U.S. Army Air Forces strategic bombing campaign that used B-29 Superfortresses based in India and China to strike industrial and military targets in Japan.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.