545
The software giant hit back at Google ’s approach to security patches last October , after discovering a Chrome flaw and “ responsibly ” disclosed it to Google so the company had enough time to patch .
 The software giant: discoverer; a Chrome flaw: vulnerability
Given event type and trigger, please tell me the arguments of all the listed option. Output format is "name1: role1; name2: role2". 
Event type: discover vulnerability 
  Option: vulnerable system owner, vulnerability, capabilities, time, vulnerable system version, discoverer, common vulnerabilities and exposures, supported platform, vulnerable system 
Text: {0} 
Answer:
 The software giant: discoverer; a Chrome flaw: vulnerability