question: Was a film producer that executive produced , directed , and wrote M1 M2 's director and art director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.film_art_director.films_art_directed M2 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.writer.film M1
  }