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The conference will begin with five member institutions in North Dakota and South Dakota , and a sixth member will join for the 2014-15 school year .
 location: North Dakota; location: South Dakota
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: North Dakota, South Dakota 
Answer:
 location: North Dakota; location: South Dakota