1615
That 's because Google continues to stagger the release of its monthly patch bundle for the minority of devices that are eligible to receive it .
 ( patch vulnerability: the release,  its monthly patch bundle: patch, the minority of devices: vulnerable system, Google: releaser) 
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: the release,  its monthly patch bundle: patch, the minority of devices: vulnerable system, Google: releaser) 