550
This latest episode is n’t as critical as some of the past disclosures , but it will likely reignite the debate over whether Google , a company with competitive commercial interests , should be leading the way security flaws in rival operating systems are disclosed in the public interest .
 rival operating systems: vulnerable system; security flaws: 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:
 rival operating systems: vulnerable system; security flaws: vulnerability