question: Were M1 and M2 executive produced by a film 's cinematographer and art director
query: SELECT count(*) WHERE {
  ?x0 ns:film.cinematographer.film ?x1 .
  ?x0 ns:film.film_art_director.films_art_directed ?x1 .
  ?x1 a ns:film.film .
  M1 ns:film.film.executive_produced_by ?x0 .
  M2 ns:film.film.executive_produced_by ?x0
  }