Was a German art director M0 's executive producer , art director , and writer
SELECT count(*) WHERE {
?x0 ns:film.film_art_director.films_art_directed M0 .
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.writer.film M0 .
?x0 ns:people.person.nationality ns:m.0345h
}