question: Was a art director that M2 and M3 were written by and were directed by M0
query: SELECT count(*) WHERE {
  M0 a ns:film.film_art_director .
  M0 ns:film.director.film M2 .
  M0 ns:film.director.film M3 .
  M0 ns:film.writer.film M2 .
  M0 ns:film.writer.film M3
  }