Amur River basin

Target entity: Amur River basin
Context triple: [Ergune River, partOf, Amur River basin]

• A. Lena–Amur watershed system
  The Lena–Amur watershed system is a major hydrological divide in eastern Siberia that separates the drainage basins of the Lena and Amur rivers across a series of mountain ranges and uplands.
• B. Lena River basin
  The Lena River basin is a vast drainage area in eastern Siberia that collects the waters of the Lena River and its tributaries before they flow northward into the Arctic Ocean.
• C. Kolyma River basin
  The Kolyma River basin is a vast, sparsely populated watershed in northeastern Siberia that drains into the Arctic Ocean and is known for its extreme cold, permafrost landscapes, and historical association with Soviet-era labor camps.
• D. Amur River
  The Amur River is a major waterway in northeastern Asia that forms much of the border between Russia and China and supports rich ecosystems and regional trade.
• E. Yenisei River valley
  The Yenisei River valley is a vast Siberian river corridor characterized by rugged taiga landscapes, hydroelectric reservoirs, and industrial towns such as Divnogorsk along one of the world’s longest river systems.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Amur River basin
Target entity description: The Amur River basin is a vast drainage system in northeastern Asia that encompasses the Amur River and its tributaries, forming a major ecological and geopolitical region shared primarily by Russia, China, and Mongolia.

• A. Lena–Amur watershed system
  The Lena–Amur watershed system is a major hydrological divide in eastern Siberia that separates the drainage basins of the Lena and Amur rivers across a series of mountain ranges and uplands.
• B. Lena River basin
  The Lena River basin is a vast drainage area in eastern Siberia that collects the waters of the Lena River and its tributaries before they flow northward into the Arctic Ocean.
• C. Kolyma River basin
  The Kolyma River basin is a vast, sparsely populated watershed in northeastern Siberia that drains into the Arctic Ocean and is known for its extreme cold, permafrost landscapes, and historical association with Soviet-era labor camps.
• D. Amur River
  The Amur River is a major waterway in northeastern Asia that forms much of the border between Russia and China and supports rich ecosystems and regional trade.
• E. Yenisei River valley
  The Yenisei River valley is a vast Siberian river corridor characterized by rugged taiga landscapes, hydroelectric reservoirs, and industrial towns such as Divnogorsk along one of the world’s longest river systems.
• F. None of above. chosen