Did a film 's art director edit M1 's sequel and direct M0
SELECT count(*) WHERE {
?x0 ns:film.director.film M0 .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.film_art_director.films_art_directed ?x2 .
?x1 ns:film.film.prequel M1 .
?x2 a ns:film.film
}