what are the important buildings of the architect whose one of the significant building is banco de londres y américa del sur ?
SELECT DISTINCT var_uri where brack_open var_x dbo_significantBuilding dbr_Banco_de_Londres_y_América_del_Sur_ attr_open Headquarters attr_close sep_dot var_x dbo_significantBuilding var_uri sep_dot var_x a dbo_Architect brack_close