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