1689
the unrest continues there and this follows up the shooting we talked about yesterday in which at least seven iraqis were killed by u . s . fire after they apparently came under fire trying to secure a certain part of the central part of mosul .
 u . s: attacker; part: place; iraqis: target
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: attack 
  Option: victim, attacker, place, target, instrument 
Text: {0} 
Answer:
 u . s: attacker; part: place; iraqis: target