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In fact , more than 40 per cent of mid-large UK business suffered on average five ransomware attacks during the last year , according to research by Vanson Bourne .
 the last year: time; mid-large UK business: 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:
 the last year: time; mid-large UK business: victim