[Lillian] and her sister [Amy] have never been close. Still, they love each other because they are family. [Amy], [Dennis] mother, likes to take him to eat ice cream on Sundays.
('Dennis', 'Lillian')
[Amy], [Dennis] mother, likes to take him to eat ice cream on Sundays. [Lillian] and her sister [Amy] have never been close. Still, they love each other because they are family.
[{('Dennis', 'aunt', 'Lillian'): [('Dennis', 'mother', 'Amy'), ('Amy', 'sister', 'Lillian')]}]
['mother', 'sister']