which office holder's resting place is st giles' church and robert strother stewart as predecessor ?
SELECT DISTINCT var_uri where brack_open var_uri dbp_restingPlace dbr_St_Giles'_Church,_Horsted_Keynes sep_dot var_uri dbp_predecessor dbr_Robert_Strother_Stewart sep_dot var_uri a dbo_OfficeHolder brack_close