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In 1939 she was granted an honorary doctorate in law from the University of the Witwatersrand in Johannesburg .
 organization: University of the Witwatersrand; location: Johannesburg
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: University of the Witwatersrand, Johannesburg 
Answer:
 organization: University of the Witwatersrand; location: Johannesburg