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Allied successes were marred by the collision of two Royal Navy helicopters over the Persian Gulf in which all six British crew members and one American were killed .
 helicopters: instrument; members: victim; American: victim; Persian Gulf: place
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:
 helicopters: instrument; members: victim; American: victim; Persian Gulf: place