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According to human rights groups , 157 people died during the 2009 Guinea protest when the military junta opened fire against tens of thousands of protesters in the city on 28 September 2009 .
 None
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:  
Answer:
 None