[Dale] and his nephew [Jerry] went to see a baseball game yesterday and had a great time. [Jerry] bought a book for his father [George].
('George', 'Dale')
[Jerry] bought a book for his father [George]. [Dale] and his nephew [Jerry] went to see a baseball game yesterday and had a great time.
[{('George', 'brother', 'Dale'): [('George', 'son', 'Jerry'), ('Jerry', 'uncle', 'Dale')]}]
['son', 'uncle']