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Mohammad Atrianfar , who had headed Hamshahri ( Fellow Citizen ) since it was founded a decade ago and was a major backer of reformist President Mohammed Khatami , explained that he wanted to " leave the new mayor with a free hand to choose a director " of the paper .
 it: organization
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: start organization 
  Option: agent, organization, place 
Text: {0} 
Answer:
 it: organization