question: What film producer was M2 's sequel 's Canadian editor
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  ?x1 ns:film.film.prequel M2
  }