915
The 17 , 000 - strong FARC , the largest guerrilla force in Colombia , has been fighting a war against the government for more than 40 years , leaving 400 , 000 dead .
 force: attacker; Colombia: place; 400 , 000: 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:
 force: attacker; Colombia: place; 400 , 000: target