Were M2 and M5 executive produced by M3 , written by a Canadian art director , and edited by M4
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:people.person.nationality ns:m.0d060g .
M2 ns:film.film.edited_by M4 .
M2 ns:film.film.executive_produced_by M3 .
M2 ns:film.film.written_by ?x0 .
M5 ns:film.film.edited_by M4 .
M5 ns:film.film.executive_produced_by M3 .
M5 ns:film.film.written_by ?x0
}