Triple

Target class: founding document of the Warsaw Pact
Context triple: [Treaty of Friendship, Cooperation and Mutual Assistance, instanceOf, founding document of the Warsaw Pact]

• A. constituent republic of the Soviet Union
  A constituent republic of the Soviet Union was a nominally sovereign national republic that, while having its own government and constitution, was politically and economically subordinate to the central Soviet federal authority.
• B. collective defense agreement
  A collective defense agreement is a formal pact among multiple states committing each to consider an attack on one member as an attack on all and to respond with coordinated defense measures.
• C. founding treaty chosen
  A founding treaty is a formal, binding international agreement that establishes, constitutes, and defines the core structures, powers, and purposes of an international organization or political union.
• D. 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.
• E. organ of the League of Nations
  An organ of the League of Nations is an institutional body established by the League to perform specific functions such as decision-making, administration, or dispute resolution within the organization’s international governance framework.
• F. None of above.