Missouri River Basin

Target entity: Missouri River Basin
Context triple: [Council Bluffs, locatedInWatershed, Missouri River Basin]

• A. Mississippi River basin
  The Mississippi River basin is the vast drainage area of the Mississippi River system, encompassing much of the central United States and parts of Canada and covering one of the largest river basins in the world.
• B. 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.
• C. Mississippi River valley
  The Mississippi River valley is a vast, fertile lowland region in the central United States shaped by the Mississippi River, historically crucial for agriculture, trade, and settlement.
• D. Upper Mississippi Valley
  The Upper Mississippi Valley is a region along the upper course of the Mississippi River, encompassing parts of several Midwestern U.S. states and historically significant for trade, settlement, and military activity.
• E. Arkansas River region
  The Arkansas River region is a historic and culturally significant area in the central United States shaped by the course of the Arkansas River, long serving as a corridor for Indigenous peoples, trade, and settlement.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Missouri River Basin
Target entity description: 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.

• A. Mississippi River basin
  The Mississippi River basin is the vast drainage area of the Mississippi River system, encompassing much of the central United States and parts of Canada and covering one of the largest river basins in the world.
• B. 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.
• C. Mississippi River valley
  The Mississippi River valley is a vast, fertile lowland region in the central United States shaped by the Mississippi River, historically crucial for agriculture, trade, and settlement.
• D. Upper Mississippi Valley
  The Upper Mississippi Valley is a region along the upper course of the Mississippi River, encompassing parts of several Midwestern U.S. states and historically significant for trade, settlement, and military activity.
• E. Arkansas River region
  The Arkansas River region is a historic and culturally significant area in the central United States shaped by the course of the Arkansas River, long serving as a corridor for Indigenous peoples, trade, and settlement.
• F. None of above. chosen