2524
According to the letter , the breach occurred on Nov. 21 , 2016 after a Boeing employee encountered a formatting issue and emailed a spreadsheet to his spouse who did n’t work at the company .
 ( data breach: the breach,  Nov. 21 , 2016: 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:
 ( data breach: the breach,  Nov. 21 , 2016: time) 