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Such attacks — another of which occurred in Atlanta last week — take over parts of private or municipal computer networks and then demand payment , or ransom , for their release .
 take over parts of private or municipal computer networks: attack pattern; last week: time; Atlanta: place
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:
 take over parts of private or municipal computer networks: attack pattern; last week: time; Atlanta: place