[Wayne] was delighted to watch his son [Kevin] steal third base in the Championship baseball game. [George] and his brother [Wayne] were playing tag in the park.
('George', 'Kevin')
[George] and his brother [Wayne] were playing tag in the park. [Wayne] was delighted to watch his son [Kevin] steal third base in the Championship baseball game.
[{('George', 'nephew', 'Kevin'): [('George', 'brother', 'Wayne'), ('Wayne', 'son', 'Kevin')]}]
['brother', 'son']