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He received his education at Knox College and at Otago University , where he gained an MA and a diploma of education .
 organization: Knox College; organization: Otago University
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: Knox College, Otago University 
Answer:
 organization: Knox College; organization: Otago University