Operation Olympic
E14860
Operation Olympic was the planned Allied invasion of Japan’s southern island of Kyushu, intended as the first stage of a full-scale invasion that was ultimately rendered unnecessary by Japan’s surrender in 1945.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Operation Olympic canonical | 8 |
| Operation Coronet | 1 |
| Operation Olympic (planned) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1751 — 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 Olympic Context triple: [World War II, hasPart, Operation Olympic]
-
A.
Operation Avalanche
Operation Avalanche was the Allied amphibious invasion of mainland Italy at Salerno in September 1943, a key campaign that led to the downfall of Mussolini’s regime and opened a new front against Nazi Germany in Europe.
-
B.
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.
-
C.
Operation Meetinghouse
Operation Meetinghouse was the devastating March 1945 U.S. firebombing raid on Tokyo, which became one of the most destructive air attacks in history.
-
D.
Operation Tidal Wave
Operation Tidal Wave was a major World War II Allied air raid targeting Romanian oil refineries at Ploiești in an effort to cripple Nazi Germany’s fuel supplies.
-
E.
Operation Blue
Operation Blue was the German Wehrmacht’s major 1942 summer offensive on the Eastern Front aimed at capturing the Soviet Union’s southern oil fields and securing strategic positions in the Caucasus.
- 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 Olympic Target entity description: Operation Olympic was the planned Allied invasion of Japan’s southern island of Kyushu, intended as the first stage of a full-scale invasion that was ultimately rendered unnecessary by Japan’s surrender in 1945.
-
A.
Operation Avalanche
Operation Avalanche was the Allied amphibious invasion of mainland Italy at Salerno in September 1943, a key campaign that led to the downfall of Mussolini’s regime and opened a new front against Nazi Germany in Europe.
-
B.
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.
-
C.
Operation Meetinghouse
Operation Meetinghouse was the devastating March 1945 U.S. firebombing raid on Tokyo, which became one of the most destructive air attacks in history.
-
D.
Operation Tidal Wave
Operation Tidal Wave was a major World War II Allied air raid targeting Romanian oil refineries at Ploiești in an effort to cripple Nazi Germany’s fuel supplies.
-
E.
Operation Blue
Operation Blue was the German Wehrmacht’s major 1942 summer offensive on the Eastern Front aimed at capturing the Soviet Union’s southern oil fields and securing strategic positions in the Caucasus.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
Allied invasion plan
ⓘ
planned military operation ⓘ |
| belligerentSide | Allies ⓘ |
| cancellationReason |
Japan’s surrender in 1945
ⓘ
end of World War II in the Pacific ⓘ |
| codeName | Operation Olympic ⓘ |
| commanderPlanned |
General Douglas MacArthur
ⓘ
linked to:
Douglas MacArthur
|
| conflict | World War II ⓘ |
| countryOfPlanning | United States of America ⓘ |
| followedByPlanned | Operation Coronet ⓘ |
| forceType | amphibious invasion ⓘ |
| geographicScope |
Japanese home islands
ⓘ
linked to:
Japanese archipelago
southern Kyushu ⓘ
linked to:
Kyushu
|
| historicalSignificance |
illustrates scale of planned invasion of Japan
ⓘ
rendered unnecessary by Japan’s 1945 surrender ⓘ |
| involvedBranchPlanned |
Royal Navy
ⓘ
United States Army ⓘ United States Marine Corps ⓘ United States Navy ⓘ |
| objective |
invasion of Kyushu
ⓘ
seizure of southern Japan ⓘ |
| opposedBy |
Empire of Japan
ⓘ
linked to:
Japan
|
| partOf | Operation Downfall ⓘ |
| plannedAs | first stage of full-scale invasion of Japan ⓘ |
| plannedBy |
Allied powers
ⓘ
linked to:
Allies of World War II
United States ⓘ
linked to:
United States of America
|
| plannedInvasionDate | November 1945 ⓘ |
| planningAuthority |
General Headquarters, U.S. Army Forces, Pacific
ⓘ
linked to:
U.S. Army Pacific
U.S. Joint Chiefs of Staff ⓘ
linked to:
Joint Chiefs of Staff
|
| precededByPlanned | intensive air and naval bombardment of Kyushu ⓘ |
| relatedTo |
Japanese surrender
ⓘ
atomic bombings of Hiroshima and Nagasaki ⓘ |
| riskAssessment | expected very high casualties on both sides ⓘ |
| status |
cancelled
ⓘ
never executed ⓘ |
| strategicPurpose |
force Japanese surrender through invasion threat
ⓘ
secure bases for subsequent invasion of Honshu ⓘ |
| target | Kyushu ⓘ |
| targetCountry | Japan ⓘ |
| theater | Pacific War ⓘ |
| timePlanned | late 1945 ⓘ |
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 Olympic Description of subject: Operation Olympic was the planned Allied invasion of Japan’s southern island of Kyushu, intended as the first stage of a full-scale invasion that was ultimately rendered unnecessary by Japan’s surrender in 1945.
Referenced by (10)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Operation Olympic
linked to: Operation Olympic