[Nancy]'s sister, [Amy], recently started acting. [Amy] is [Milton]'s mother. She takes very good care of him.
('Milton', 'Nancy')
[Amy] is [Milton]'s mother. She takes very good care of him. [Nancy]'s sister, [Amy], recently started acting.
[{('Milton', 'aunt', 'Nancy'): [('Milton', 'mother', 'Amy'), ('Amy', 'sister', 'Nancy')]}]
['mother', 'sister']