735
For years , researchers , hackers , and even some politicians have warned about stark vulnerabilities in a mobile data network called SS7 .
 years: time; researchers: discoverer; hackers: discoverer; politicians: discoverer; stark vulnerabilities: vulnerability; a mobile data network: vulnerable system; SS7: 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:
 years: time; researchers: discoverer; hackers: discoverer; politicians: discoverer; stark vulnerabilities: vulnerability; a mobile data network: vulnerable system; SS7: vulnerable system