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In March , based on the current value of Bitcoin at the time , it was estimated that the group had earned nearly $ 850,000 USD from their victims , who paid the ransom demands .
 $ 850,000 USD: price; the group: attacker; March: time; their victims: 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:
 $ 850,000 USD: price; the group: attacker; March: time; their victims: victim