question: What Canadian film editor directed M2 , M3 , and M4 and directed M5 , M6 , M7 , and M8
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.director.film M5 .
  ?x0 ns:film.director.film M6 .
  ?x0 ns:film.director.film M7 .
  ?x0 ns:film.director.film M8 .
  ?x0 ns:people.person.nationality ns:m.0d060g
  }