627
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 .
 ( transfer ownership: sales,  arms: artifact, Washington: seller, nation: buyer) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: declare bankruptcy, transfer ownership, transfer money, marry, transport, die, phone write, arrest jail, convict, sentence, sue, end organization, start organization, end position, start position, meet, elect, attack, injure, born, fine, release parole, charge indict, extradite, trial hearing, demonstrate, divorce, nominate, appeal, pardon, execute, acquit, merge organization, Arguments type: beneficiary, prosecutor, plaintiff, seller, victim, buyer, agent, destination, artifact, organization, recipient, person, place, origin, target, giver, adjudicator, attacker, vehicle, defendant, entity, instrument. 
Text: {0} 
Answer:
 ( transfer ownership: sales,  arms: artifact, Washington: seller, nation: buyer) 