question: Did M2 star a art director that M1 was written by and directed by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.writer.film M1 .
  M2 ns:film.film.starring/ns:film.performance.actor ?x0
  }