Nebraska–Iowa border

Target entity: Nebraska–Iowa border
Context triple: [Missouri River, USStateBorderFor, Nebraska–Iowa border]

• A. Iowa–South Dakota border
  The Iowa–South Dakota border is the state line in the north-central United States that largely follows the course of the Big Sioux River, separating Iowa from South Dakota.
• B. Missouri–Kansas state line
  The Missouri–Kansas state line is the boundary separating the states of Missouri and Kansas, notably running through the Kansas City metropolitan area and dividing it between the two states.
• C. Nebraska–Iowa region
  The Nebraska–Iowa region is a bi-state area in the central United States that encompasses communities and economic activity spanning the border between eastern Nebraska and western Iowa, including the Omaha–Council Bluffs metropolitan area.
• D. Alabama–Mississippi border
  The Alabama–Mississippi border is the state line separating Alabama and Mississippi in the southeastern United States, running through rural areas, forests, and river crossings.
• E. eastern Nebraska
  Eastern Nebraska is a region of the U.S. state of Nebraska centered around the Omaha–Lincoln corridor, known for its relatively dense population, diversified economy, and role as the state’s primary commercial and cultural center.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: Nebraska–Iowa border
Target entity description: The Nebraska–Iowa border is the state line in the central United States that largely follows the course of the Missouri River, separating Nebraska to the west from Iowa to the east.

• A. Iowa–South Dakota border
  The Iowa–South Dakota border is the state line in the north-central United States that largely follows the course of the Big Sioux River, separating Iowa from South Dakota.
• B. Missouri–Kansas state line
  The Missouri–Kansas state line is the boundary separating the states of Missouri and Kansas, notably running through the Kansas City metropolitan area and dividing it between the two states.
• C. Nebraska–Iowa region
  The Nebraska–Iowa region is a bi-state area in the central United States that encompasses communities and economic activity spanning the border between eastern Nebraska and western Iowa, including the Omaha–Council Bluffs metropolitan area.
• D. Alabama–Mississippi border
  The Alabama–Mississippi border is the state line separating Alabama and Mississippi in the southeastern United States, running through rural areas, forests, and river crossings.
• E. eastern Nebraska
  Eastern Nebraska is a region of the U.S. state of Nebraska centered around the Omaha–Lincoln corridor, known for its relatively dense population, diversified economy, and role as the state’s primary commercial and cultural center.
• F. None of above. chosen