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: U.S. invasion of Cambodia | Statement: [Kent State shootings, cause, U.S. invasion of Cambodia]

Target entity: U.S. invasion of Cambodia
Context triple: [Kent State shootings, cause, U.S. invasion of Cambodia]

• A. U.S. invasion of Cambodia (1970) chosen
  The U.S. invasion of Cambodia in 1970 was a controversial expansion of the Vietnam War in which American and South Vietnamese forces entered Cambodian territory to attack North Vietnamese and Viet Cong sanctuaries, sparking widespread protest and political backlash in the United States.
• B. U.S. bombing of Cambodia
  The U.S. bombing of Cambodia was a controversial and extensive American aerial campaign during the Vietnam War era that targeted suspected communist sanctuaries in Cambodia, causing significant civilian casualties and political destabilization.
• C. Vietnamization
  Vietnamization was a U.S. strategy during the Vietnam War that sought to shift combat responsibilities to South Vietnamese forces while gradually withdrawing American troops.
• D. Cambodian–Vietnamese War
  The Cambodian–Vietnamese War was a late-1970s conflict in which Vietnam invaded Cambodia, overthrew the Khmer Rouge regime, and installed a new government, leading to prolonged regional instability and international tensions during the Cold War.
• E. Gulf of Tonkin incident
  The Gulf of Tonkin incident was a 1964 naval confrontation between North Vietnam and the United States that led to a major escalation of U.S. military involvement in the Vietnam War.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.