what are the software whose operating systems are windows server 2012 r2 and windows server 2012 r2 ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_operatingSystem dbr_Windows_Server_2012_R2 sep_dot var_uri dbo_operatingSystem dbr_Windows_Server_2012_R2 sep_dot var_uri a dbo_Software brack_close