question: Was M3 produced by a writer of M2 , produced by a production company 's Chinese employee , and produced by M4
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x0 ns:people.person.nationality ns:m.0d05w3 .
  ?x1 a ns:film.production_company .
  ?x2 ns:film.writer.film M2 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies ?x2 .
  M3 ns:film.film.produced_by|ns:film.film.production_companies M4
  }