[Lillian] called [Nancy], her sister, to see if she wanted to go out to eat. [Linda] was celebrating her birthday with her mother [Nancy].
('Linda', 'Lillian')
[Linda] was celebrating her birthday with her mother [Nancy]. [Lillian] called [Nancy], her sister, to see if she wanted to go out to eat.
[{('Linda', 'aunt', 'Lillian'): [('Linda', 'mother', 'Nancy'), ('Nancy', 'sister', 'Lillian')]}]
['mother', 'sister']