question: What film editor whose child produced and edited M2 was a costume designer 's parent
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.editor .
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x2 .
  ?x1 a ns:film.film_costumer_designer .
  ?x2 ns:film.editor.film M2 .
  ?x2 ns:film.producer.film|ns:film.production_company.films M2
  }