[Nicholas] went to the wedding ceremony for his brother [Wayne]. [Wayne] went to the baseball game with his son [Kevin]
('Nicholas', 'Kevin')
[Nicholas] went to the wedding ceremony for his brother [Wayne]. [Wayne] went to the baseball game with his son [Kevin]
[{('Nicholas', 'nephew', 'Kevin'): [('Nicholas', 'brother', 'Wayne'), ('Wayne', 'son', 'Kevin')]}]
['brother', 'son']