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On July 27 , 2005 , the Canadian Press reported that Proulx , the assistant commissioner of the RCMP , instructed staff to withhold important information from Canada 's foreign affairs minister Bill Graham about their investigation into Maher Arar who was tortured in a Syrian jail .
 person: Proulx; person: Bill Graham; person: Maher Arar
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: Proulx, Bill Graham, Maher Arar 
Answer:
 person: Proulx; person: Bill Graham; person: Maher Arar