question: Did M2 employ M1 's sequel 's Chinese cinematographer , employ M3 , and employ M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.cinematographer.film ?x1 .
  ?x0 ns:people.person.nationality ns:m.0d05w3 .
  ?x1 ns:film.film.prequel M1 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person M4
  }