892
On Sunday morning , another Hamas assailant blew up the Jerusalem bus and about half an hour later , a third bomber from the group detonated explosives on the outskirts of Jerusalem , killing only himself .
 assailant: attacker
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:
 assailant: attacker