question: Was M2 edited by , written by , and directed by a German star of M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.film M1 .
  ?x0 ns:people.person.nationality ns:m.0345h .
  M2 ns:film.film.directed_by ?x0 .
  M2 ns:film.film.edited_by ?x0 .
  M2 ns:film.film.written_by ?x0
  }