who is starring in nazi germany movies produced by leni riefenstahl ?
select distinct var_uri where brack_open var_film rdf_type dbo_Film sep_dot var_film dbo_country dbr_Nazi_Germany sep_dot var_film dbo_producer dbr_Leni_Riefenstahl sep_dot var_film dbo_starring var_uri sep_dot var_uri rdf_type dbo_Person sep_dot brack_close