which appliance's cpu is powerpc g4 and predecessor is power macintosh g3 ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_cpu dbr_PowerPC_G4 sep_dot var_uri dbo_predecessor dbr_Power_Macintosh_G3_ attr_open Blue_&_White attr_close sep_dot var_uri a dbo_InformationAppliance brack_close