question: Were M4 and M6 written by a Chinese person that M2 and M3 starred and produced by M5
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.actor.film/ns:film.performance.film M2 .
  ?x0 ns:film.actor.film/ns:film.performance.film M3 .
  ?x0 ns:people.person.nationality ns:m.0d05w3 .
  M4 ns:film.film.produced_by|ns:film.film.production_companies M5 .
  M4 ns:film.film.written_by ?x0 .
  M6 ns:film.film.produced_by|ns:film.film.production_companies M5 .
  M6 ns:film.film.written_by ?x0
  }