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He has published several books on Mexican theatre , especially on the works of Rodolfo Usigli and Elena Garro .
 person: Rodolfo Usigli; person: Elena Garro
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: Rodolfo Usigli, Elena Garro 
Answer:
 person: Rodolfo Usigli; person: Elena Garro