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The United States and Britain suffered their first casualties Thursday and Friday as they pushed into Iraq , with two U . S . Marines killed in combat and another eight British and four American Marines dying in a helicopter crash that appeared to be accidental .
 Marines: victim
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: die 
  Option: victim, person, place, agent, instrument 
Text: {0} 
Answer:
 Marines: victim