question: Was a Canadian art director that M2 , M3 , and M4 were executive produced by and M6 and M7 starred M0
query: SELECT count(*) WHERE {
  M0 a ns:film.film_art_director .
  M0 ns:film.actor.film/ns:film.performance.film M6 .
  M0 ns:film.actor.film/ns:film.performance.film M7 .
  M0 ns:film.producer.films_executive_produced M2 .
  M0 ns:film.producer.films_executive_produced M3 .
  M0 ns:film.producer.films_executive_produced M4 .
  M0 ns:people.person.nationality ns:m.0d060g
  }