question: Was a film that was written by M4 , starred a art director , and was executive produced by M3 M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film_art_director .
  M1 a ns:film.film .
  M1 ns:film.film.executive_produced_by M3 .
  M1 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M1 ns:film.film.written_by M4
  }