What film was written by M1 , M2 , and M3 , written by M4 , and edited by a Canadian film director
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.edited_by ?x1 .
?x0 ns:film.film.written_by M1 .
?x0 ns:film.film.written_by M2 .
?x0 ns:film.film.written_by M3 .
?x0 ns:film.film.written_by M4 .
?x1 a ns:film.director .
?x1 ns:people.person.nationality ns:m.0d060g
}