question: What German art director was a female art director of M2 , M3 , M4 , M5 , and M6
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film_art_director.films_art_directed M2 .
  ?x0 ns:film.film_art_director.films_art_directed M3 .
  ?x0 ns:film.film_art_director.films_art_directed M4 .
  ?x0 ns:film.film_art_director.films_art_directed M5 .
  ?x0 ns:film.film_art_director.films_art_directed M6 .
  ?x0 ns:people.person.gender ns:m.02zsn .
  ?x0 ns:people.person.nationality ns:m.0345h
  }