1579
In a majority of the cases , once ransomware enters a system , there is no way a user can remove it without losing some files or data , even if one pay the ransom .
 a system: victim; a user: victim; 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:
 a system: victim; a user: victim; ransomware: tool