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: Vietnam War era | Statement: [White House Plumbers, hasHistoricalPeriod, Vietnam War era]

Target entity: Vietnam War era
Context triple: [White House Plumbers, hasHistoricalPeriod, Vietnam War era]

• A. Vietnam War chosen
  The Vietnam War was a protracted Cold War-era conflict in Southeast Asia, primarily between communist North Vietnam and U.S.-backed South Vietnam, that profoundly shaped global politics, military strategy, and American society.
• B. 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.
• C. 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.
• D. Indochina conflicts
  The Indochina conflicts were a series of mid-20th-century wars in Southeast Asia involving decolonization struggles, Cold War rivalries, and regional power contests centered on Vietnam, Laos, and Cambodia.
• E. Cold War
  The Cold War was a prolonged period of geopolitical tension and ideological rivalry between the United States and its allies and the Soviet Union and its allies, spanning roughly from the late 1940s to the early 1990s.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.