What screenwriter was a Canadian person that wrote and executive produced M2
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:film.writer .
?x0 a ns:people.person .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:film.writer.film M2 .
?x0 ns:people.person.nationality ns:m.0d060g
}