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Hackers hit the QNB in April 2016 and the UAE InvestBank in May 2016 .
 ( data breach: hit,  the QNB: attacker, April 2016: time, Hackers: attacker, the UAE InvestBank: victim, May 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: hit,  the QNB: attacker, April 2016: time, Hackers: attacker, the UAE InvestBank: victim, May 2016: time) 