Was M4 's American German male director M3 's art director
SELECT count(*) WHERE {
?x0 ns:film.director.film M4 .
?x0 ns:film.film_art_director.films_art_directed M3 .
?x0 ns:people.person.gender ns:m.05zppz .
?x0 ns:people.person.nationality ns:m.0345h .
?x0 ns:people.person.nationality ns:m.09c7w0
}