421
The events have renewed debate over the secretive process by which the federal government decides whether to disclose a zero - day vulnerability to the product ’s manufacturer , as well as spurring scrutiny of the NSA .
 a zero - day vulnerability: vulnerability; federal government: discoverer; manufacturer: vulnerable system owner
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 zero - day vulnerability: vulnerability; federal government: discoverer; manufacturer: vulnerable system owner