1421
Auctioneers reported a $ 9 . 3 billion winning bid for Yuganskneftgaz -- the company ' s main asset , worth two to three times that amount -- by an anonymous company located in Tver .
 ( transfer ownership: winning,  Yuganskneftgaz: artifact, company: seller, company: 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: winning,  Yuganskneftgaz: artifact, company: seller, company: buyer) 