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Earlier this month it was widely reported that Walt Disney ’s CEO Bob Iger had been contacted by hackers who were threatening to release one of the studio ’s movies onto the internet unless a ransom was paid .
 hackers: attacker; threatening to release one of the studio ’s movies: attack pattern; Walt Disney: victim; CEO Bob Iger: victim
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 hackers: attacker; threatening to release one of the studio ’s movies: attack pattern; Walt Disney: victim; CEO Bob Iger: victim