question: Did M2 and M4 star a Japanese film director 's child and star M3
query: SELECT count(*) WHERE {
  ?x0 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x1 .
  ?x1 a ns:film.director .
  ?x1 ns:people.person.nationality ns:m.03_3d .
  M2 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M2 ns:film.film.starring/ns:film.performance.actor M3 .
  M4 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M4 ns:film.film.starring/ns:film.performance.actor M3
  }