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The Air Force is reportedly considering purchasing several squadrons of Sukhoi Su - 27 interceptors , considered the world ' s premier dogfighters .
 interceptors: artifact; Air Force: buyer
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: transfer ownership 
  Option: artifact, seller, place, beneficiary, buyer 
Text: {0} 
Answer:
 interceptors: artifact; Air Force: buyer