Who was a art director that M2 , M3 , M4 , and M5 were executive produced by
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.film_art_director .
?x0 a ns:people.person .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:film.producer.films_executive_produced M3 .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:film.producer.films_executive_produced M5
}