Columbia River Basin

Target entity: Columbia River Basin
Context triple: [Deschutes River, partOf, Columbia River Basin]

• A. Columbia River
  The Columbia River is a major river of the Pacific Northwest that forms much of the border between Oregon and Washington and is vital for hydroelectric power, transportation, and regional ecosystems.
• B. Lewis and Clark River
  The Lewis and Clark River is a small coastal river in northwestern Oregon that flows through forested terrain into the Youngs River near Astoria, historically associated with the Lewis and Clark Expedition.
• C. Klamath River
  The Klamath River is a major river in southern Oregon and northern California known for its salmon runs, ecological significance, and ongoing water and dam-removal controversies.
• D. Missouri River Basin
  The Missouri River Basin is a vast drainage area in the central United States that collects water from the Missouri River and its tributaries across multiple states and parts of Canada.
• E. Columbia Plateau
  The Columbia Plateau is a vast volcanic and sedimentary region in the Pacific Northwest known for its basalt flows, deep river canyons, and extensive agricultural lands shaped by the Columbia River and its tributaries.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Columbia River Basin
Target entity description: The Columbia River Basin is a vast watershed in the Pacific Northwest that drains portions of seven U.S. states and British Columbia into the Columbia River, supporting major ecosystems, agriculture, and hydroelectric power.

• A. Columbia River
  The Columbia River is a major river of the Pacific Northwest that forms much of the border between Oregon and Washington and is vital for hydroelectric power, transportation, and regional ecosystems.
• B. Lewis and Clark River
  The Lewis and Clark River is a small coastal river in northwestern Oregon that flows through forested terrain into the Youngs River near Astoria, historically associated with the Lewis and Clark Expedition.
• C. Klamath River
  The Klamath River is a major river in southern Oregon and northern California known for its salmon runs, ecological significance, and ongoing water and dam-removal controversies.
• D. Missouri River Basin
  The Missouri River Basin is a vast drainage area in the central United States that collects water from the Missouri River and its tributaries across multiple states and parts of Canada.
• E. Columbia Plateau
  The Columbia Plateau is a vast volcanic and sedimentary region in the Pacific Northwest known for its basalt flows, deep river canyons, and extensive agricultural lands shaped by the Columbia River and its tributaries.
• F. None of above. chosen