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The CIA hoards " zero day " vulnerabilities — weaknesses not known to the software 's vendors — instead of revealing them to the likes of Google , Apple and Microsoft !
 them: vulnerability; Microsoft: vulnerable system owner; Apple: vulnerable system owner; Google: vulnerable system owner; The CIA: discoverer; zero day " vulnerabilities: vulnerability; weaknesses: vulnerability; the software 's vendors: discoverer
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:
 them: vulnerability; Microsoft: vulnerable system owner; Apple: vulnerable system owner; Google: vulnerable system owner; The CIA: discoverer; zero day " vulnerabilities: vulnerability; weaknesses: vulnerability; the software 's vendors: discoverer