Was M3 edited by a German executive producer of M0 and M1
SELECT count(*) WHERE {
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:people.person.nationality ns:m.0345h .
M3 ns:film.film.edited_by ?x0
}