[Tony]'s aunt, [Lillian], bought him a car on valentines [Theresa] and her son [Tony] went to the zoo and then out to dinner yesterday.
('Theresa', 'Lillian')
[Theresa] and her son [Tony] went to the zoo and then out to dinner yesterday. [Tony]'s aunt, [Lillian], bought him a car on valentines
[{('Theresa', 'sister', 'Lillian'): [('Theresa', 'son', 'Tony'), ('Tony', 'aunt', 'Lillian')]}]
['son', 'aunt']