2751
I will be talking with a ranking member of the Senate Foreign Relations Committee , Senator Joe Biden , just ahead , for his take on how the war is going .
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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:
 None