Mary had two daughters [Amy] and [Lillian] that were very close in age. She did n't have her son [Dale] until the girls were almost old enough to move out.
('Lillian', 'Dale')
Mary had two daughters [Amy] and [Lillian] that were very close in age. She did n't have her son [Dale] until the girls were almost old enough to move out.
[{('Lillian', 'brother', 'Dale'): [('Lillian', 'sister', 'Amy'), ('Amy', 'brother', 'Dale')]}]
['sister', 'brother']