question: Was M1 a cinematographer , art director , editor , and writer of a film
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  M1 ns:film.cinematographer.film ?x0 .
  M1 ns:film.editor.film ?x0 .
  M1 ns:film.film_art_director.films_art_directed ?x0 .
  M1 ns:film.writer.film ?x0
  }