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First Book Mtshali worked as a messenger in Soweto before he became a poet , and his first book , Sounds of a Cowhide Drum ( 1971 ) , explores both the banality and extremity of apartheid through the eyes of working men of South Africa , even while it recalls the energy of those Mtshali frequently calls simply " ancestors . "
 person: Mtshali; location: Soweto; person: Mtshali
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: Mtshali, Soweto, Mtshali 
Answer:
 person: Mtshali; location: Soweto; person: Mtshali