question: Who was M3 's Canadian Chinese director
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:people.person .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:people.person.nationality ns:m.0d05w3 .
  ?x0 ns:people.person.nationality ns:m.0d060g
  }