516
Over the weekend the company took the unusual step of releasing a similar patch for Windows XP , which the company announced in 2014 it would no longer support .
 ( patch vulnerability: releasing,  patch: patch, Windows XP: vulnerable system, the company: releaser, weekend: time, 2014: time) 
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:
 ( patch vulnerability: releasing,  patch: patch, Windows XP: vulnerable system, the company: releaser, weekend: time, 2014: time) 