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They asked for 300 bitcoin for the entire lot , and at the same time contacted some of the affected patients directly , offering to delete the sensitive data for a sum that varied between € 50 and € 2,000 ( in bitcoin ) .
 ( ransom: asked for,  300 bitcoin: price, They: attacker, offering to delete the sensitive data: attack pattern, € 50: price, € 2,000: price, in bitcoin: payment method) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: phishing, data breach, ransom, discover vulnerability, patch vulnerability, Arguments type: vulnerable system, capabilities, vulnerability, number of victim, issues addressed, compromised data, damage amount, common vulnerabilities and exposures, victim, patch number, number of data, tool, discoverer, time, purpose, place, payment method, releaser, vulnerable system version, attacker, supported platform, patch, price, vulnerable system owner, trusted entity, attack pattern. 
Text: {0} 
Answer:
 ( ransom: asked for,  300 bitcoin: price, They: attacker, offering to delete the sensitive data: attack pattern, € 50: price, € 2,000: price, in bitcoin: payment method) 