Triple

Target entity: Oklahoma Territory
Context triple: [No Man's Land, incorporatedInto, Oklahoma Territory]

• A. Oklahoma Territory chosen
  Oklahoma Territory was a historical U.S. territory in the late 19th and early 20th centuries that preceded the formation of the state of Oklahoma.
• B. Kansas Territory
  Kansas Territory was a mid-19th-century U.S. territorial region that became a focal point of violent conflict over slavery’s expansion before eventually entering the Union as the state of Kansas.
• C. Arkansas Territory
  Arkansas Territory was an organized incorporated territory of the United States from 1819 to 1836 that preceded the state of Arkansas and encompassed parts of what is now Oklahoma.
• D. Nebraska Territory
  Nebraska Territory was a mid-19th-century U.S. organized incorporated territory that once encompassed much of the northern Great Plains before being gradually reduced to form the state of Nebraska and parts of several other states.
• E. Dakota Territory
  Dakota Territory was a 19th-century organized incorporated territory of the United States that once encompassed the areas that later became North Dakota, South Dakota, and parts of neighboring states.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.