[Dale] enjoys playing tennis with his sister and her son. Her son is named [Jeff]. [Jeff]'s father's name is [Wayne].
('Wayne', 'Dale')
[Jeff]'s father's name is [Wayne]. [Dale] enjoys playing tennis with his sister and her son. Her son is named [Jeff].
[{('Wayne', 'brother', 'Dale'): [('Wayne', 'son', 'Jeff'), ('Jeff', 'uncle', 'Dale')]}]
['son', 'uncle']