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: Deep operations doctrine | Statement: [39th Army, usedDoctrine, Deep operations doctrine]

Target entity: Deep operations doctrine
Context triple: [39th Army, usedDoctrine, Deep operations doctrine]

• A. Soviet deep operations doctrine chosen
  Soviet deep operations doctrine was a World War II–era Red Army operational concept that emphasized large-scale, coordinated offensives designed to penetrate enemy defenses in depth and rapidly exploit breakthroughs with mobile forces.
• B. Capstone Doctrine
  The Capstone Doctrine is the United Nations’ core policy and guidance document that outlines the principles, objectives, and operational framework for modern UN peacekeeping operations.
• C. Soviet military doctrine
  Soviet military doctrine is a Cold War–era strategic and operational framework developed by the USSR, emphasizing large-scale conventional warfare, centralized command, and combined-arms operations shaped by Marxist-Leninist military theory.
• D. United States military doctrine
  United States military doctrine is the body of fundamental principles and strategic concepts that guides how the U.S. armed forces plan, conduct, and coordinate military operations across all domains.
• E. Unified Land Operations
  Unified Land Operations is the U.S. Army’s central warfighting doctrine that integrates offensive, defensive, and stability tasks to achieve decisive outcomes across the full spectrum of conflict.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.