question: Were M3 , M4 , and M5 written by and directed by a Canadian film editor that M2 was directed by
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  M3 ns:film.film.directed_by ?x0 .
  M3 ns:film.film.written_by ?x0 .
  M4 ns:film.film.directed_by ?x0 .
  M4 ns:film.film.written_by ?x0 .
  M5 ns:film.film.directed_by ?x0 .
  M5 ns:film.film.written_by ?x0
  }