182
Four days later , Nayana said it 'd negotiated with the attackers and got the payment reduced to 397 bitcoins , or about $ 1 million .
 the attackers: attacker; 397 bitcoins: price; $ 1 million: price; Nayana: victim; Four days later: time
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 attackers: attacker; 397 bitcoins: price; $ 1 million: price; Nayana: victim; Four days later: time