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** Marais Viljoen , State President of South Africa ( 1979–1984 )
 person: Marais Viljoen; person: State President of South Africa
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 person: Marais Viljoen; person: State President of South Africa