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Fancy Bear began posting medical records of Olympians online last year , with U.S. and British athletes making up a large proportion of those targeted .
 ( data breach: posting,  Fancy Bear: attacker, medical records: compromised data, Olympians: victim, last year: time, U.S. and British athletes: victim) 
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:
 ( data breach: posting,  Fancy Bear: attacker, medical records: compromised data, Olympians: victim, last year: time, U.S. and British athletes: victim) 