That is both logically and correctly South Dakota.
The state of North Dakota is north (or above) the state of South Dakota.
North Dakota is north of South Dakota.
The state of South Dakota is south of North Dakota.
The US state of South Dakota is south of the US state of North Dakota.
North Dakota and South Dakota are both immediately to the West of Minnesota.North and South Dakota are both on the western border of Minnesota.
The US state of North Dakota is north of South Dakota.
North Dakota is bordered by South Dakota to the south.
It is above, or north of South Dakota.
The US state of Montana is bordered on the east by both North Dakota and South Dakota while the state of Minnesota is bordered on the west by both North Dakota and South Dakota.
The US state south of North Dakota is South Dakota. South Dakota is bordered by the US states of North Dakota, Minnesota, Iowa, Nebraska, Wyoming, and Montana.
The US state of Montana has an eastern border with North Dakota and South Dakota.
The US state of Montana is bordered by North Dakota and South Dakota on its eastern border.