question: What film was written by and directed by a cinematographer of M1 and M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 ns:film.cinematographer.film M1 .
  ?x1 ns:film.cinematographer.film M2
  }