Complex sentence: Cannon Ball is a census-designated place located in the northeast corner of Sioux County, North Dakota, at the point where the Cannonball River meets Lake Oahe of the Missouri River.
Split into simpler sentences: Cannon Ball is a census-designated place in Sioux County, North Dakota in the United States. It sits in the northeastern part of the county where the Cannonball River meets Lake Oahe of the Missouri River.