question: Were M1 and M4 edited by M2 and M3 and edited by a costume designer 's parent '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 ?x1 .
  ?x1 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x2 .
  ?x2 a ns:film.film_costumer_designer .
  FILTER ( ?x0 != ?x1 ) .
  M1 ns:film.film.edited_by ?x0 .
  M1 ns:film.film.edited_by M2 .
  M1 ns:film.film.edited_by M3 .
  M4 ns:film.film.edited_by ?x0 .
  M4 ns:film.film.edited_by M2 .
  M4 ns:film.film.edited_by M3
  }