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The National Security Agency warned Microsoft about a vulnerability in Windows after a hacker group began to leak hacking tools used by the agency online , the Washington Post reported late Tuesday .
 a vulnerability: vulnerability; Microsoft: vulnerable system owner; The National Security Agency: discoverer; Windows: vulnerable system
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 vulnerability: vulnerability; Microsoft: vulnerable system owner; The National Security Agency: discoverer; Windows: vulnerable system