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Yet , Washington maintains a 12 - year ban on arms sales to the world ' s most populous Muslim nation with the aim of curbing human rights abuses still happening despite momentous political change .
 arms: artifact; Washington: seller; nation: 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:
 arms: artifact; Washington: seller; nation: buyer