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: Gulf of Tonkin incident | Statement: [Operation Pierce Arrow, triggeredBy, Gulf of Tonkin incident]

Target entity: Gulf of Tonkin incident
Context triple: [Operation Pierce Arrow, triggeredBy, Gulf of Tonkin incident]

• A. Gulf of Tonkin incident chosen
  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.
• B. Haiphong incident
  The Haiphong incident was a violent 1946 clash between French colonial forces and Vietnamese nationalists in the port city of Haiphong that escalated tensions and helped trigger the First Indochina War.
• C. Gulf of Tonkin Resolution
  The Gulf of Tonkin Resolution was a 1964 U.S. congressional measure that effectively authorized President Lyndon B. Johnson to escalate American military involvement in Vietnam without a formal declaration of war.
• D. Tet Offensive
  The Tet Offensive was a major 1968 campaign of surprise attacks by North Vietnamese and Viet Cong forces across South Vietnam that dramatically shifted U.S. public opinion and marked a turning point in the Vietnam War.
• E. U-2 incident of 1960
  The U-2 incident of 1960 was a Cold War crisis in which an American U-2 spy plane was shot down over the Soviet Union, severely damaging U.S.–Soviet relations and derailing a planned summit between their leaders.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.