[Theresa] is taking a trip to see her sister [Nancy]. [Theresa] has an amazing son. Her son [Travis] is very talented.
('Travis', 'Nancy')
[Theresa] has an amazing son. Her son [Travis] is very talented. [Theresa] is taking a trip to see her sister [Nancy].
[{('Travis', 'aunt', 'Nancy'): [('Travis', 'mother', 'Theresa'), ('Theresa', 'sister', 'Nancy')]}]
['mother', 'sister']