Were M3 and M4 produced by a Spanish art director and produced by a person
SELECT count(*) WHERE {
?x0 a ns:film.film_art_director .
?x0 ns:people.person.nationality ns:m.06mkj .
?x1 a ns:people.person .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x1
}