Did a film 's sequel 's German producer write M0
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:film.writer.film M0 .
?x0 ns:people.person.nationality ns:m.0345h .
?x1 ns:film.film.prequel ?x2 .
?x2 a ns:film.film
}