Triple

Target class: Cold War-era security pact
Context triple: [Sino-American Mutual Defense Treaty, instanceOf, Cold War-era security pact]

• A. Cold War–era treaty chosen
  A Cold War–era treaty is a formal international agreement, typically between rival blocs or superpowers, designed to manage ideological conflict, arms competition, and spheres of influence during the mid-20th-century geopolitical standoff.
• B. Cold War organization
  A Cold War organization is an entity—such as a military alliance, intelligence agency, or political bloc—formed or structured primarily to advance strategic, ideological, or security objectives during the geopolitical rivalry between the United States and the Soviet Union from roughly 1947 to 1991.
• C. World War II-era treaty
  A World War II-era treaty is a formal, legally binding agreement between nations made during or immediately surrounding the Second World War, typically addressing military alliances, territorial changes, peace terms, or postwar political and economic arrangements.
• D. Cold War-era resolution
  A Cold War-era resolution is a formal decision or declaration adopted by a governmental or international body during the Cold War that addressed geopolitical tensions, ideological conflicts, or security concerns between the Eastern and Western blocs.
• E. Cold War policy measure
  A Cold War policy measure is a governmental or strategic action designed to influence, contain, or counter the political, military, or ideological power of rival states within the bipolar U.S.–Soviet global rivalry.
• F. None of above.