[Jennifer] and her mother [Amy] went out to eat. [Amy]'s sister, [Lillian], went with them.
('Jennifer', 'Lillian')
[Jennifer] and her mother [Amy] went out to eat. [Amy]'s sister, [Lillian], went with them.
[{('Jennifer', 'aunt', 'Lillian'): [('Jennifer', 'mother', 'Amy'), ('Amy', 'sister', 'Lillian')]}]
['mother', 'sister']