Triple

Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).

Phrase: 21st Army Group in Northwest Europe | Statement: [I British Corps, alliedCommandStructure, 21st Army Group in Northwest Europe]

Target entity: 21st Army Group in Northwest Europe
Context triple: [I British Corps, alliedCommandStructure, 21st Army Group in Northwest Europe]

• A. 21st Army Group chosen
  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.
• B. 12th Army Group
  The 12th Army Group was a major U.S. Army field army formation in northwest Europe during World War II, commanded by General Omar Bradley and instrumental in the Allied advance from Normandy into Germany.
• C. Allied Forces Northern Europe
  Allied Forces Northern Europe was a former NATO major subordinate command responsible for the defense and coordination of allied military operations in Northern Europe during the Cold War.
• D. 15th Army Group
  The 15th Army Group was a high-level Allied command formation in the Mediterranean theater during World War II, overseeing major British and American field armies in the Italian Campaign.
• E. British Ninth Army
  The British Ninth Army was a major British field army formation that operated primarily in the Middle East during World War II, overseeing forces in regions such as Palestine, Syria, and Lebanon.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.