question: What Chinese female film producer did M2 and M3 star
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:film.actor.film/ns:film.performance.film M2 .
  ?x0 ns:film.actor.film/ns:film.performance.film M3 .
  ?x0 ns:people.person.gender ns:m.02zsn .
  ?x0 ns:people.person.nationality ns:m.0d05w3
  }