Was a film 's prequel edited by M0 , directed by a art director , and directed by M1 and M2
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.directed_by M1 .
?x0 ns:film.film.directed_by M2 .
?x0 ns:film.film.edited_by M0 .
?x0 ns:film.film.sequel ?x2 .
?x1 a ns:film.film_art_director .
?x2 a ns:film.film
}