Were M1 and M3 directed by a film 's writer and art director and executive produced by M2
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed ?x1 .
?x0 ns:film.writer.film ?x1 .
?x1 a ns:film.film .
M1 ns:film.film.directed_by ?x0 .
M1 ns:film.film.executive_produced_by M2 .
M3 ns:film.film.directed_by ?x0 .
M3 ns:film.film.executive_produced_by M2
}