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Such attacks — another of which occurred in Atlanta last week — take over parts of private or municipal computer networks and then demand payment , or ransom , for their release .
 ransom: demand payment
Please tell me event type and its trigger word from given type options. Output format is "type: trigger".  Option: phishing, data breach, ransom, discover vulnerability, patch vulnerability 
Text: {0} 
Answer:
 ransom: demand payment