Were M1 and M4 edited by M2 and M3 and edited by a art director of M0 's sequel
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed ?x1 .
?x1 ns:film.film.prequel M0 .
M1 ns:film.film.edited_by ?x0 .
M1 ns:film.film.edited_by M2 .
M1 ns:film.film.edited_by M3 .
M4 ns:film.film.edited_by ?x0 .
M4 ns:film.film.edited_by M2 .
M4 ns:film.film.edited_by M3
}