1939 American expedition to K2

Target entity: 1939 American expedition to K2
Context triple: [Fritz Wiessner, notableExpedition, 1939 American expedition to K2]

• A. 1909 K2 expedition
  The 1909 K2 expedition was an early Italian mountaineering attempt in the Karakoram that conducted pioneering exploration and achieved significant altitude records on K2 under the leadership of Luigi Amedeo, Duke of the Abruzzi.
• B. 1953 Nanga Parbat expedition
  The 1953 Nanga Parbat expedition was the successful Austrian-German mountaineering campaign during which Hermann Buhl made the first ascent of Nanga Parbat in the Himalayas.
• C. German Himalayan expedition (1939)
  The German Himalayan expedition of 1939 was a Nazi-era mountaineering mission to the Nanga Parbat region that included climber Heinrich Harrer among its members.
• D. 1963 American Mount Everest Expedition
  The 1963 American Mount Everest Expedition was a landmark U.S.-led climbing mission that achieved the first American ascent of Everest and pioneered a new route via the West Ridge.
• E. 1960 Dhaulagiri expedition
  The 1960 Dhaulagiri expedition was the successful mountaineering campaign that achieved the first ascent of Dhaulagiri, one of the world’s fourteen 8,000-meter peaks, in the Nepal Himalayas.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: 1939 American expedition to K2
Target entity description: The 1939 American expedition to K2 was an early and controversial attempt to climb the world’s second-highest mountain, marked by high ambition, internal conflict, and multiple fatalities.

• A. 1909 K2 expedition
  The 1909 K2 expedition was an early Italian mountaineering attempt in the Karakoram that conducted pioneering exploration and achieved significant altitude records on K2 under the leadership of Luigi Amedeo, Duke of the Abruzzi.
• B. 1953 Nanga Parbat expedition
  The 1953 Nanga Parbat expedition was the successful Austrian-German mountaineering campaign during which Hermann Buhl made the first ascent of Nanga Parbat in the Himalayas.
• C. German Himalayan expedition (1939)
  The German Himalayan expedition of 1939 was a Nazi-era mountaineering mission to the Nanga Parbat region that included climber Heinrich Harrer among its members.
• D. 1963 American Mount Everest Expedition
  The 1963 American Mount Everest Expedition was a landmark U.S.-led climbing mission that achieved the first American ascent of Everest and pioneered a new route via the West Ridge.
• E. 1960 Dhaulagiri expedition
  The 1960 Dhaulagiri expedition was the successful mountaineering campaign that achieved the first ascent of Dhaulagiri, one of the world’s fourteen 8,000-meter peaks, in the Nepal Himalayas.
• F. None of above. chosen