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: Southwestern Front (Red Army) | Statement: [Barvenkovo–Lozovaya offensive, front, Southwestern Front (Red Army)]

Target entity: Southwestern Front (Red Army)
Context triple: [Barvenkovo–Lozovaya offensive, front, Southwestern Front (Red Army)]

• A. Soviet Southern Front
  The Soviet Southern Front was a major Red Army formation on the Eastern Front of World War II, responsible for defending and conducting operations in the southern sector of the Soviet–German front, including in the Donbass region.
• B. Soviet Southwestern Front chosen
  The Soviet Southwestern Front was a major Red Army operational formation on the Eastern Front of World War II that played a key role in large-scale defensive and offensive operations against Nazi Germany.
• C. Western Front (Red Army)
  The Western Front (Red Army) was a major Soviet operational-strategic formation responsible for conducting large-scale military operations against German forces on the central sector of the Eastern Front during World War II.
• D. Soviet Voronezh Front
  The Soviet Voronezh Front was a major Red Army formation on the Eastern Front of World War II that played a key role in defensive and offensive operations against German forces, including in the central sector of the Kursk salient.
• E. Red Southern Front (Red Army)
  The Red Southern Front was a major operational formation of the Bolshevik Red Army during the Russian Civil War, responsible for conducting campaigns against White and other anti-Bolshevik forces in southern Russia.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.