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Senate Democrats are still rebuilding their computer system after hackers demanded a ransom earlier this month to unlock the network .
 earlier this month: time; hackers: attacker; network: victim; computer system: victim; Senate Democrats: 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:
 earlier this month: time; hackers: attacker; network: victim; computer system: victim; Senate Democrats: attacker