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: M61 Vulcan 20 mm cannon (early variants) | Statement: [General Dynamics F-111, armament, M61 Vulcan 20 mm cannon (early variants)]

Target entity: M61 Vulcan 20 mm cannon (early variants)
Context triple: [General Dynamics F-111, armament, M61 Vulcan 20 mm cannon (early variants)]

• A. M61A1 Vulcan 20 mm cannon chosen
  The M61A1 Vulcan 20 mm cannon is a six-barreled, electrically driven Gatling-style rotary cannon widely used on modern fighter aircraft for high-rate-of-fire air-to-air and air-to-ground engagements.
• B. M242 Bushmaster 25 mm chain gun
  The M242 Bushmaster 25 mm chain gun is a widely used, externally powered autocannon known for its reliability and versatility on armored vehicles and naval platforms.
• C. M230 30 mm chain gun
  The M230 30 mm chain gun is a single-barrel, electrically driven automatic cannon primarily used on attack helicopters for high-rate, accurate fire against ground targets.
• D. GAU-12 Equalizer 25 mm cannon
  The GAU-12 Equalizer is a five-barrel 25 mm Gatling-type rotary cannon used primarily by U.S. military aircraft for high-rate, close air support and ground-attack missions.
• E. 37 mm Nudelman N-37 cannon
  The 37 mm Nudelman N-37 cannon is a powerful Soviet aircraft autocannon developed in the late 1940s, widely used as a primary heavy armament on early jet fighters and other combat aircraft.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.