question: Was M3 edited by M4 , edited by a Canadian screenwriter , and executive produced by M0 's sibling
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.sibling_s/ns:people.sibling_relationship.sibling|ns:fictional_universe.fictional_character.siblings/ns:fictional_universe.sibling_relationship_of_fictional_characters.siblings M0 .
  ?x1 a ns:film.writer .
  ?x1 ns:people.person.nationality ns:m.0d060g .
  FILTER ( ?x0 != M0 ) .
  M3 ns:film.film.edited_by ?x1 .
  M3 ns:film.film.edited_by M4 .
  M3 ns:film.film.executive_produced_by ?x0
  }