question: Was a film produced , written , and executive produced by a art director that produced M2 , M3 , and M4
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.executive_produced_by ?x1 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 a ns:film.film_art_director .
  ?x1 ns:film.producer.film|ns:film.production_company.films M2 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M3 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M4
  }