[George] and his brother [Dale] liked taking [Dale]'s son [Tony] to the movies on weekends.
('Tony', 'George')
[George] and his brother [Dale] liked taking [Dale]'s son [Tony] to the movies on weekends.
[{('Tony', 'uncle', 'George'): [('Tony', 'father', 'Dale'), ('Dale', 'brother', 'George')]}]
['father', 'brother']