who is starring in spain movies produced by luis buñuel ?
select distinct var_uri where brack_open var_film rdf_type dbo_Film sep_dot var_film dbo_country dbr_Spain sep_dot var_film dbo_producer dbr_Luis_Buñuel sep_dot var_film dbo_starring var_uri sep_dot var_uri rdf_type dbo_Person sep_dot brack_close