question: What was a film directed by M1 's art director and editor
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by ?x1 .
  ?x1 ns:film.editor.film M1 .
  ?x1 ns:film.film_art_director.films_art_directed M1
  }