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It seems that the hackers belong to one of the many bug bounty hunting groups that are finding flaws in systems of big companies in exchange for money .
 the many bug bounty hunting groups: discoverer; flaws: vulnerability; systems: vulnerable system; big companies: vulnerable system owner; the hackers: 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:
 the many bug bounty hunting groups: discoverer; flaws: vulnerability; systems: vulnerable system; big companies: vulnerable system owner; the hackers: discoverer