Were M2 , M3 , and M4 produced by a art director that M1 was produced by , directed by , and executive produced 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 .
?x0 ns:film.producer.film|ns:film.production_company.films M1 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}