Was M1 's sequel produced by M0 and executive produced by a art director
SELECT count(*) WHERE {
?x0 ns:film.film.executive_produced_by ?x1 .
?x0 ns:film.film.prequel M1 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies M0 .
?x1 a ns:film.film_art_director
}