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Currently , Indonesia uses short - range Rapier missiles purchased 30 years ago to protect its vital oil and natural gas fields in Sumatra , Borneo and Papua from air attack .
 missiles: artifact; Indonesia: 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:
 missiles: artifact; Indonesia: buyer