2559
Attacking on the ground and calling in air strikes , Kurdish fighters and U . S . troops have dislodged stubborn Iraqi soldiers at a key bridge in northern Iraq .
 fighters: attacker; troops: attacker; bridge: place; soldiers: 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:
 fighters: attacker; troops: attacker; bridge: place; soldiers: target