Did M3 star a art director and star a Canadian director of M1
SELECT count(*) WHERE {
?x0 ns:film.director.film M1 .
?x0 ns:people.person.nationality ns:m.0d060g .
?x1 a ns:film.film_art_director .
M3 ns:film.film.starring/ns:film.performance.actor ?x0 .
M3 ns:film.film.starring/ns:film.performance.actor ?x1
}