Final answer:
To locate the account with System Administrator privileges from the SID list, search for a SID ending in '-500'. Without the SID list, it's impossible to assign administrator roles based solely on names.
Step-by-step explanation:
To identify the user account with System Administrator privileges from a list of Security Identifiers (SIDs) extracted using a tool like SIDExtracter, one needs to look for specific well-known SIDs that correspond to the system administrator account. In Windows, the SID for an account with administrator privileges typically ends in '-500'. Without the actual list of SIDs, it is not possible to determine which user has those privileges based on names alone.