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“ If that ’s the case , the city ’s IT staff spent the past week rebuilding Atlanta ’s online systems using backed - up data that had not been hit by the ransomware , ” he says , adding that any data not backed up is likely “ lost for good . ”
 the ransomware: tool; Atlanta ’s online systems: 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:
 the ransomware: tool; Atlanta ’s online systems: victim