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