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Retired Lt . Gen . Jay Garner , who will head the U . S .- led interim administration in Iraq , opened the conference under a golden - colored tent in the shadows of the 4 , 000 - year - old ziggurat at Ur , a terraced temple platform of the ancient Sumerians .
 ( start position: head,  Jay Garner: person, Iraq: place, administration: entity) 
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:
 ( start position: head,  Jay Garner: person, Iraq: place, administration: entity) 