2892
Although the Iraqis retreated from this area , at dusk they fired what observers say were seven artillery rounds back at their former stronghold creating new fear and potentially new casualties .
 Iraqis: artifact; area: origin
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: transport 
  Option: victim, artifact, destination, place, origin, vehicle, agent 
Text: {0} 
Answer:
 Iraqis: artifact; area: origin