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 Brigade (Australia) | Statement: [Battle of Balikpapan (1945), unitInvolved, 21st Brigade (Australia)]

Target entity: 21st Brigade (Australia)
Context triple: [Battle of Balikpapan (1945), unitInvolved, 21st Brigade (Australia)]

• A. Australian 17th Brigade
  The Australian 17th Brigade was an infantry formation of the Second Australian Imperial Force that served prominently in the Pacific theatre during the Second World War.
• B. 11th Brigade (Australia)
  The 11th Brigade (Australia) is a formation of the Australian Army Reserve responsible for providing trained personnel and capabilities for domestic operations and support to the Australian Defence Force.
• C. Australian 18th Brigade
  The Australian 18th Brigade was an infantry formation of the Second Australian Imperial Force that saw notable combat service in the Middle East and Pacific campaigns during World War II.
• D. 19th Brigade (Australia)
  The 19th Brigade (Australia) was an Australian Army infantry brigade that served with distinction in the Second World War, notably in Middle Eastern campaigns and later in the Pacific against Japanese forces.
• E. Australian 7th Brigade
  The Australian 7th Brigade was an infantry formation of the Australian Army that served with distinction in the Second World War, particularly in the Pacific theatre against Japanese forces.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"

Entity: 21st Brigade (Australia)
Triple: [Battle of Balikpapan (1945), unitInvolved, 21st Brigade (Australia)]

The 21st Brigade (Australia) was an infantry formation of the Australian Army that served with distinction in the Second World War, particularly in campaigns across the Pacific.

Target entity: 21st Brigade (Australia)
Target entity description: The 21st Brigade (Australia) was an infantry formation of the Australian Army that served with distinction in the Second World War, particularly in campaigns across the Pacific.

• A. Australian 17th Brigade
  The Australian 17th Brigade was an infantry formation of the Second Australian Imperial Force that served prominently in the Pacific theatre during the Second World War.
• B. 11th Brigade (Australia)
  The 11th Brigade (Australia) is a formation of the Australian Army Reserve responsible for providing trained personnel and capabilities for domestic operations and support to the Australian Defence Force.
• C. Australian 18th Brigade
  The Australian 18th Brigade was an infantry formation of the Second Australian Imperial Force that saw notable combat service in the Middle East and Pacific campaigns during World War II.
• D. 19th Brigade (Australia)
  The 19th Brigade (Australia) was an Australian Army infantry brigade that served with distinction in the Second World War, notably in Middle Eastern campaigns and later in the Pacific against Japanese forces.
• E. Australian 7th Brigade
  The Australian 7th Brigade was an infantry formation of the Australian Army that served with distinction in the Second World War, particularly in the Pacific theatre against Japanese forces.
• F. None of above. chosen