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: Polaris A-2 missile | Statement: [W47 warhead, usedIn, Polaris A-2 missile]

Target entity: Polaris A-2 missile
Context triple: [W47 warhead, usedIn, Polaris A-2 missile]

• A. Polaris missile system chosen
  The Polaris missile system was an early U.S. submarine-launched ballistic missile (SLBM) program that provided a key component of the nation's nuclear deterrent during the Cold War.
• B. SM-64 Navaho missile
  The SM-64 Navaho missile was an experimental U.S. Air Force supersonic cruise missile program of the 1950s that pioneered technologies later used in intercontinental ballistic missiles and space launch vehicles.
• C. R-12 Dvina missile
  The R-12 Dvina missile was a Soviet medium-range ballistic missile central to Cold War nuclear strategy and notably deployed during the Cuban Missile Crisis.
• D. R-1 missile
  The R-1 missile was an early Soviet short-range ballistic missile closely based on the German V-2, marking the USSR’s first significant step into rocket and missile technology.
• E. R-2 missile
  The R-2 missile was an early Soviet short-range ballistic missile, an improved derivative of the German V-2, used primarily for military purposes and high-altitude research in the early Cold War period.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.