595
American commandos captured a half brother of Saddam Hussein on Thursday , the latest success in a campaign to round up insiders from the former regime .
 brother: person; commandos: agent
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: arrest jail 
  Option: person, agent, place 
Text: {0} 
Answer:
 brother: person; commandos: agent