name the office holder with predecessor as robert gascoyne-cecil and office in secretary of state for education ?
SELECT DISTINCT var_uri where brack_open var_uri dbp_predecessor dbr_Robert_Gascoyne-Cecil,_5th_Marquess_of_Salisbury sep_dot var_uri dbp_office dbr_Secretary_of_State_for_Education sep_dot var_uri a dbo_OfficeHolder brack_close