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He tested the NVRAM destruction attack on printers from Brother , Konica Minolta , Lexmark , Dell and HP , and verified that they are vulnerable .
 He: discoverer; HP: vulnerable system owner; Dell: vulnerable system owner; Lexmark: vulnerable system owner; Minolta: vulnerable system owner; Konica: vulnerable system owner; Brother: vulnerable system owner; printers: vulnerable system; they: 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:
 He: discoverer; HP: vulnerable system owner; Dell: vulnerable system owner; Lexmark: vulnerable system owner; Minolta: vulnerable system owner; Konica: vulnerable system owner; Brother: vulnerable system owner; printers: vulnerable system; they: vulnerable system