1440
The remedy , Grobman said , is for the government and critical infrastructure providers to plan ahead , both by securing their systems and gaming out how they would respond to a ransomware attack .
 their systems: time; they: 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:
 their systems: time; they: victim