Were M1 , M2 , and M3 produced by a film 's art director , writer , and director
SELECT count(*) WHERE {
?x0 ns:film.director.film ?x1 .
?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.produced_by|ns:film.film.production_companies ?x0 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}