Was M0 's sequel directed and written by a art director of M1
SELECT count(*) WHERE {
?x0 ns:film.film.directed_by ?x1 .
?x0 ns:film.film.prequel M0 .
?x0 ns:film.film.written_by ?x1 .
?x1 ns:film.film_art_director.films_art_directed M1
}