question: What screenwriter that played M1 , M2 , M3 , and M4 was a parent of a costume designer of M5 and M6
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.writer .
  ?x0 ns:film.actor.film/ns:film.performance.character M1 .
  ?x0 ns:film.actor.film/ns:film.performance.character M2 .
  ?x0 ns:film.actor.film/ns:film.performance.character M3 .
  ?x0 ns:film.actor.film/ns:film.performance.character M4 .
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x1 ns:film.film_costumer_designer.costume_design_for_film M5 .
  ?x1 ns:film.film_costumer_designer.costume_design_for_film M6
  }