Yellowstone River

Target entity: Yellowstone River
Context triple: [Missouri River, hasTributary, Yellowstone River]

• A. Snake River
  The Snake River is a major waterway in the northwestern United States that flows through Wyoming, Idaho, Oregon, and Washington before joining the Columbia River.
• B. Niobrara River
  The Niobrara River is a scenic waterway in northern Nebraska known for its unique mix of Great Plains, Sandhills, and forest ecosystems and popular for canoeing, tubing, and wildlife viewing.
• C. Missouri River
  The Missouri River is the longest river in North America, flowing from the Rocky Mountains of western Montana to join the Mississippi River near St. Louis.
• D. Assiniboine River
  The Assiniboine River is a major prairie river in Western Canada that flows through Saskatchewan and Manitoba before joining the Red River at Winnipeg.
• E. Yukon River
  The Yukon River is a major waterway in northwestern North America that flows through Canada’s Yukon Territory and Alaska to the Bering Sea, historically significant for transportation, Indigenous cultures, and the Klondike Gold Rush.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Yellowstone River
Target entity description: The Yellowstone River is a major free-flowing river in the western United States that originates in Yellowstone National Park and flows through Wyoming, Montana, and North Dakota before joining the Missouri River.

• A. Snake River
  The Snake River is a major waterway in the northwestern United States that flows through Wyoming, Idaho, Oregon, and Washington before joining the Columbia River.
• B. Niobrara River
  The Niobrara River is a scenic waterway in northern Nebraska known for its unique mix of Great Plains, Sandhills, and forest ecosystems and popular for canoeing, tubing, and wildlife viewing.
• C. Missouri River
  The Missouri River is the longest river in North America, flowing from the Rocky Mountains of western Montana to join the Mississippi River near St. Louis.
• D. Assiniboine River
  The Assiniboine River is a major prairie river in Western Canada that flows through Saskatchewan and Manitoba before joining the Red River at Winnipeg.
• E. Yukon River
  The Yukon River is a major waterway in northwestern North America that flows through Canada’s Yukon Territory and Alaska to the Bering Sea, historically significant for transportation, Indigenous cultures, and the Klondike Gold Rush.
• F. None of above. chosen