question: Was a art director M1 's prequel 's cinematographer and director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  ?x0 ns:film.cinematographer.film ?x1 .
  ?x0 ns:film.director.film ?x1 .
  ?x1 ns:film.film.sequel M1
  }