name the office holder who has a child named mary duke biddle trent semans and resting place is arlington national cemetery ?
SELECT DISTINCT var_uri where brack_open var_uri dbo_child dbr_Mary_Duke_Biddle_Trent_Semans sep_dot var_uri dbp_restingPlace dbr_Arlington_National_Cemetery sep_dot var_uri a dbo_OfficeHolder brack_close