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Experts say the leak , which was mostly lines of computer code , was made up of a variety of “ zero - day exploits ” that can infiltrate Windows machines and then be used for espionage , vandalism or document theft .
 Experts: discoverer; zero - day exploits: vulnerability; be used for espionage , vandalism or document theft: capabilities; infiltrate Windows machines: capabilities
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:
 Experts: discoverer; zero - day exploits: vulnerability; be used for espionage , vandalism or document theft: capabilities; infiltrate Windows machines: capabilities