What was directed by a German art director of M2 and M3 and written by M0
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.written_by M0 .
?x1 ns:film.film_art_director.films_art_directed M2 .
?x1 ns:film.film_art_director.films_art_directed M3 .
?x1 ns:people.person.nationality ns:m.0345h
}