question: Was a production company 's employee M1 's Chinese star
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.film M1 .
  ?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
  }