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In the CloudPets incident , different hackers appear to have deleted the original databases , but left ransom notes on the exposed systems , Hunt said .
 ransom notes: tool; the exposed systems: victim; have deleted the original databases: attack pattern; hackers: 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: ransom 
  Option: victim, attacker, payment method, attack pattern, damage amount, tool, time, price, place 
Text: {0} 
Answer:
 ransom notes: tool; the exposed systems: victim; have deleted the original databases: attack pattern; hackers: attacker