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The handover is a credibility test for the Palestinian Authority , which must show it means business when it comes to reining in hardline groups plotting attacks on the Jewish state .
 groups: 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:
 groups: attacker