Did a Canadian art director edit M1 , M2 , and M3 and executive produce M4
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.editor.film M1 .
?x0 ns:film.editor.film M2 .
?x0 ns:film.editor.film M3 .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:people.person.nationality ns:m.0d060g
}