[Theresa] takes her son [Nicolas] to the park every Saturday. [Lillian] took her nephew [Nicolas] to the park to play soccer.
('Theresa', 'Lillian')
[Theresa] takes her son [Nicolas] to the park every Saturday. [Lillian] took her nephew [Nicolas] to the park to play soccer.
[{('Theresa', 'sister', 'Lillian'): [('Theresa', 'son', 'Nicolas'), ('Nicolas', 'aunt', 'Lillian')]}]
['son', 'aunt']