What screenwriter that executive produced M2 and M3 was a German film editor
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.editor .
?x0 a ns:film.writer .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:film.producer.films_executive_produced M3 .
?x0 ns:people.person.nationality ns:m.0345h
}