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In 2017 , prominent visual artists Shirin Neshat and William Kentridge directed operas at the Salzburg Festival .
 person: Shirin Neshat; person: William Kentridge
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: Shirin Neshat, William Kentridge 
Answer:
 person: Shirin Neshat; person: William Kentridge