question: Were M3 , M4 , and M5 written by a German director and writer of M0 and M1
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M0 .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:people.person.nationality ns:m.0345h .
  M3 ns:film.film.written_by ?x0 .
  M4 ns:film.film.written_by ?x0 .
  M5 ns:film.film.written_by ?x0
  }