[Theresa] and her brother [Wayne] are taking [Theresa]'s son [Tony] to the park.
('Wayne', 'Tony')
[Theresa] and her brother [Wayne] are taking [Theresa]'s son [Tony] to the park.
[{('Wayne', 'nephew', 'Tony'): [('Wayne', 'sister', 'Theresa'), ('Theresa', 'son', 'Tony')]}]
['sister', 'son']