2663
House clearance Royal Marine style , troops from ( UNINTELLIGIBLE ) commando task to seek out the last pockets of Iraqi resistance in Umm Qasr go in hard to arrest suspected regime sympathizers and search for weapons .
 ( arrest jail: arrest,  sympathizers: person, Umm Qasr: place, troops: agent) 
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:
 ( arrest jail: arrest,  sympathizers: person, Umm Qasr: place, troops: agent) 