Triple

Target class: Cold War-era thriller
Context triple: [The Valhalla Exchange, instanceOf, Cold War-era thriller]

• A. Cold War novel chosen
  A Cold War novel is a work of fiction set during or shaped by the geopolitical tensions between the Western and Eastern blocs, typically exploring themes of espionage, ideological conflict, nuclear anxiety, and the personal impact of global rivalry.
• B. 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.
• C. Cold War operation
  A Cold War operation is a covert or overt mission conducted by a state or its proxies during the Cold War era to advance strategic, ideological, or geopolitical objectives without escalating into full-scale direct conflict between superpowers.
• D. Cold War era case
  A Cold War era case is a legal or historical instance arising between roughly 1947 and 1991 that reflects or is shaped by the geopolitical tensions, ideological conflicts, and security concerns between the United States and the Soviet Union and their respective allies.
• E. Cold War concept
  A Cold War concept is an idea, strategy, or framework that emerged from or explains the geopolitical, ideological, and military tensions between the United States and the Soviet Union and their allies from the mid-20th century.
• F. None of above.