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MONTREAL — On Sept 10 , municipal employees in a region between Montreal and Quebec City arrived at work to discover a threatening message on their computers notifying them they were locked out of all their files .
 were locked out of all their files: attack pattern; their computers: victim; Sept 10: time; municipal employees: victim; Montreal: place; Quebec City: place; a threatening message: tool; them: victim; 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:
 were locked out of all their files: attack pattern; their computers: victim; Sept 10: time; municipal employees: victim; Montreal: place; Quebec City: place; a threatening message: tool; them: victim; they: victim