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A pediatrics practice , ABCD Pediatrics , serving the San Antonio , Texas metropolitan area reported that it was hit with a ransomware attack , but existing antivirus software helped to slow down the attack , and the practice 's IT vendor successfully removed the virus and all corrupt data from its servers .
 ( ransom: was hit with a ransomware attack,  it: victim, ABCD Pediatrics: victim, pediatrics practice: victim, Texas: place, San Antonio: place, its servers: victim, the virus: tool, corrupt data: attack pattern) 
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: was hit with a ransomware attack,  it: victim, ABCD Pediatrics: victim, pediatrics practice: victim, Texas: place, San Antonio: place, its servers: victim, the virus: tool, corrupt data: attack pattern) 