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The ransomware encrypted the files on the computers and showed a ransom note demanding payment for a decryption key .
 showed a ransom note: attack pattern; the computers: victim; encrypted the files: attack pattern; The ransomware: tool
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:
 showed a ransom note: attack pattern; the computers: victim; encrypted the files: attack pattern; The ransomware: tool