Was M2 executive produced by a art director that M1 was executive produced and directed by
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:film.director.film M1 .
?x0 ns:film.producer.films_executive_produced M1 .
M2 ns:film.film.executive_produced_by ?x0
}