question: Which Canadian executive producer of M1 and M2 wrote and directed M0
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.director.film M0 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.producer.films_executive_produced M2 .
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:people.person.nationality ns:m.0d060g
  }