Triple

Target class: organ of the Communist Party of the Soviet Union
Context triple: [Party Congress, instanceOf, organ of the Communist Party of the Soviet Union]

• A. organ of the Holy See
  An organ of the Holy See is an official body, institution, or office that acts on behalf of the Holy See to exercise its spiritual, administrative, diplomatic, or judicial functions within the Catholic Church and in relations with states and international organizations.
• B. communist regime
  A communist regime is a political system in which a single party claiming to represent the working class controls the state, economy, and major social institutions in pursuit of a classless, stateless society, typically through centralized planning and limited political freedoms.
• C. political organization chosen
  A political organization is a structured group of individuals who collectively pursue specific political goals, such as influencing public policy, gaining or maintaining power, or representing particular interests within a political system.
• D. former political institution
  A former political institution is an organization or governing body that once held official political authority or administrative power but has since been dissolved, replaced, or rendered inactive.
• E. federal city of Russia
  A federal city of Russia is a major urban locality that functions as a separate federal subject, holding the same administrative status as a region or republic and typically serving as a key political, economic, or cultural center.
• F. None of above.