question: Was M1 written by M2 , edited by M3 , edited by M4 , and written by a parent of a art director
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.children|ns:fictional_universe.fictional_character.children|ns:organization.organization.child/ns:organization.organization_relationship.child ?x1 .
  ?x1 a ns:film.film_art_director .
  M1 ns:film.film.edited_by M3 .
  M1 ns:film.film.edited_by M4 .
  M1 ns:film.film.written_by ?x0 .
  M1 ns:film.film.written_by M2
  }