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Before coming to North Dakota , Archer taught at a school in McCook , Nebraska and later , in 1912 , chemistry and physics at Ottawa , Illinois .
 organization: Dakota; person: Archer; location: McCook , Nebraska; location: Ottawa , Illinois
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: Dakota, Archer, McCook , Nebraska, Ottawa , Illinois 
Answer:
 organization: Dakota; person: Archer; location: McCook , Nebraska; location: Ottawa , Illinois