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In March , the city of Atlanta was attacked by SamSam ransomware that crippled its court system , prevented water bill payments and forced city employees to file paper reports .
 SamSam ransomware: tool; the city of Atlanta: victim; March: time
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:
 SamSam ransomware: tool; the city of Atlanta: victim; March: time