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The incumbent minister is Olivia Muchena since February 13 , 2009 and the deputy minister is Evelyn Masaiti .
 Olivia Muchena, Evelyn Masaiti
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Olivia Muchena, Evelyn Masaiti