Was a film directed by M2 , executive produced by M1 , and produced by a art director
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.directed_by M2 .
?x0 ns:film.film.executive_produced_by M1 .
?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
?x1 a ns:film.film_art_director
}