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Cyber researchers have tied the vulnerability exploited by Petya to the one used by WannaCry — a weakness discovered by the NSA years ago that the agency turned into a hacking tool dubbed EternalBlue .
 a weakness: vulnerability; the NSA: discoverer; years ago: time; the vulnerability: vulnerability; exploited by Petya: capabilities; turned into a hacking tool: 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:
 a weakness: vulnerability; the NSA: discoverer; years ago: time; the vulnerability: vulnerability; exploited by Petya: capabilities; turned into a hacking tool: capabilities