question: Did M3 and M5 star a Canadian film director 's male child 's sibling and star M4
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 ?x1 .
  ?x1 ns:people.person.gender ns:m.05zppz .
  ?x1 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x2 .
  ?x2 a ns:film.director .
  ?x2 ns:people.person.nationality ns:m.0d060g .
  FILTER ( ?x0 != ?x1 ) .
  M3 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M3 ns:film.film.starring/ns:film.performance.actor M4 .
  M5 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M5 ns:film.film.starring/ns:film.performance.actor M4
  }