question: Were M2 and M4 executive produced by a art director , directed by M3 , and executive produced by a cinematographer
query: SELECT count(*) WHERE {
  ?x0 a ns:film.cinematographer .
  ?x1 a ns:film.film_art_director .
  M2 ns:film.film.directed_by M3 .
  M2 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.executive_produced_by ?x1 .
  M4 ns:film.film.directed_by M3 .
  M4 ns:film.film.executive_produced_by ?x0 .
  M4 ns:film.film.executive_produced_by ?x1
  }