question: Were M3 and M6 produced by M4 , produced by M5 , and produced by a German male film editor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:people.person.gender ns:m.05zppz .
  ?x0 ns:people.person.nationality ns:m.0345h .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies M4 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies M5 .
  M6 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M6 ns:film.film.produced_by|ns:film.film.production_companies M4 .
  M6 ns:film.film.produced_by|ns:film.film.production_companies M5
  }