United States–Oklahoma border

Target entity: United States–Oklahoma border
Context triple: [Dallam County, bordersCountry, United States–Oklahoma border]

• A. Texas–Oklahoma state line
  The Texas–Oklahoma state line is the boundary separating the U.S. states of Texas and Oklahoma, much of it following the Red River and serving as a key geographic and historical dividing line in the region.
• B. Missouri–Oklahoma border
  The Missouri–Oklahoma border is the state line in the central United States separating Missouri from Oklahoma, running primarily north–south and marking a key portion of the boundary between the Midwest and the Southern Plains.
• C. Arkansas–Texas border
  The Arkansas–Texas border is the state boundary in the southern United States where Arkansas and Texas meet, notably running through the twin city area of Texarkana.
• D. Arizona–New Mexico border
  The Arizona–New Mexico border is the state line in the southwestern United States separating Arizona and New Mexico, running through desert, plateau, and Native American reservation lands.
• E. Nebraska–Missouri border
  The Nebraska–Missouri 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 Missouri to the east.
• F. None of above. chosen
• G. Unsure - the case is ambiguous/there is not enough information to decide.

Target entity: United States–Oklahoma border
Target entity description: The United States–Oklahoma border is the state boundary line that separates Oklahoma from its neighboring U.S. states, including Texas, Kansas, Arkansas, Colorado, Missouri, and New Mexico.

• A. Texas–Oklahoma state line
  The Texas–Oklahoma state line is the boundary separating the U.S. states of Texas and Oklahoma, much of it following the Red River and serving as a key geographic and historical dividing line in the region.
• B. Missouri–Oklahoma border
  The Missouri–Oklahoma border is the state line in the central United States separating Missouri from Oklahoma, running primarily north–south and marking a key portion of the boundary between the Midwest and the Southern Plains.
• C. Arkansas–Texas border
  The Arkansas–Texas border is the state boundary in the southern United States where Arkansas and Texas meet, notably running through the twin city area of Texarkana.
• D. Arizona–New Mexico border
  The Arizona–New Mexico border is the state line in the southwestern United States separating Arizona and New Mexico, running through desert, plateau, and Native American reservation lands.
• E. Nebraska–Missouri border
  The Nebraska–Missouri 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 Missouri to the east.
• F. None of above. chosen