question: Were M2 and M3 produced by and directed by a art director that wrote and edited M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  ?x0 ns:film.editor.film M1 .
  ?x0 ns:film.writer.film M1 .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0
  }