question: Was M2 edited by and directed by a German star and writer of M0
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.film M0 .
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:people.person.nationality ns:m.0345h .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.edited_by ?x0
  }