21st Army Group
E11282
The 21st Army Group was a major British-led Allied field army formation in Northwest Europe during World War II, commanded by General Bernard Montgomery and instrumental in the liberation of Western Europe after D-Day.
All labels observed (5)
| Label | Occurrences |
|---|---|
| 21st Army Group canonical | 28 |
| British 21st Army Group | 7 |
| 21st Army Group in Northwest Europe | 1 |
| Allied 21st Army Group | 1 |
| British 21st Army Group (in Northwest Europe) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T30392 — 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: 21st Army Group Context triple: [Supreme Headquarters Allied Expeditionary Force, hasComponent, 21st Army Group]
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A.
Italian 1st Army
The Italian 1st Army was a major Royal Italian Army field formation that fought in North Africa during World War II alongside German forces, notably suffering heavy defeat at El Alamein.
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B.
Italian 8th Army
The Italian 8th Army was a major Royal Italian Army formation on the Eastern Front in World War II, best known for its devastating defeat alongside German forces during the Soviet offensives in the winter of 1942–1943.
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C.
British XXX Corps
British XXX Corps was a major British Army formation in World War II, best known for its armoured spearhead role in the Allied advance during the Normandy campaign and the failed Operation Market Garden.
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D.
British 1st Airborne Division
The British 1st Airborne Division was an elite World War II airborne infantry formation of the British Army, best known for its major role in large-scale parachute and glider operations in Northwest Europe and the Mediterranean.
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E.
1st Polish Army
The 1st Polish Army was a major World War II field formation of Polish forces fighting alongside the Soviet Red Army on the Eastern Front.
- 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: 21st Army Group Target entity description: The 21st Army Group was a major British-led Allied field army formation in Northwest Europe during World War II, commanded by General Bernard Montgomery and instrumental in the liberation of Western Europe after D-Day.
-
A.
Italian 1st Army
The Italian 1st Army was a major Royal Italian Army field formation that fought in North Africa during World War II alongside German forces, notably suffering heavy defeat at El Alamein.
-
B.
Italian 8th Army
The Italian 8th Army was a major Royal Italian Army formation on the Eastern Front in World War II, best known for its devastating defeat alongside German forces during the Soviet offensives in the winter of 1942–1943.
-
C.
British XXX Corps
British XXX Corps was a major British Army formation in World War II, best known for its armoured spearhead role in the Allied advance during the Normandy campaign and the failed Operation Market Garden.
-
D.
British 1st Airborne Division
The British 1st Airborne Division was an elite World War II airborne infantry formation of the British Army, best known for its major role in large-scale parachute and glider operations in Northwest Europe and the Mediterranean.
-
E.
1st Polish Army
The 1st Polish Army was a major World War II field formation of Polish forces fighting alongside the Soviet Red Army on the Eastern Front.
- F. None of above. chosen
Statements (48)
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: 21st Army Group Description of subject: The 21st Army Group was a major British-led Allied field army formation in Northwest Europe during World War II, commanded by General Bernard Montgomery and instrumental in the liberation of Western Europe after D-Day.
Referenced by (38)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
British 21st Army Group
this entity surface form:
British 21st Army Group
this entity surface form:
British 21st Army Group
this entity surface form:
British 21st Army Group
this entity surface form:
Allied 21st Army Group
this entity surface form:
British 21st Army Group (in Northwest Europe)
this entity surface form:
21st Army Group in Northwest Europe
this entity surface form:
British 21st Army Group
this entity surface form:
British 21st Army Group
this entity surface form:
British 21st Army Group
subject surface form:
Guards Armoured Division