an horse and it's grandfather are die and live at relatively different once
maternal_grandfather is not grandfather. farms has not horses_living_on grandmothers is not old_and_old_people_die. grandmother is person_who_can_die. grandmothers is old_and_old_people_die. post_horse is not horse. post_horse is horse. grandfather_and_grandmother is not grandparents. grandfather is ancestor. grandfather is not ancestor.