Did a German screenwriter executive produce M3 and M4 and write M1 and M2
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:film.producer.films_executive_produced M3 .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:film.writer.film M1 .
?x0 ns:film.writer.film M2 .
?x0 ns:people.person.nationality ns:m.0345h
}