[George] went to the baseball game with his brother [Nicholas]. [Nicholas] who is [Glen]'s father grounded [Glen] after finding out what [Glen] had done at school.
('George', 'Glen')
[George] went to the baseball game with his brother [Nicholas]. [Nicholas] who is [Glen]'s father grounded [Glen] after finding out what [Glen] had done at school.
[{('George', 'nephew', 'Glen'): [('George', 'brother', 'Nicholas'), ('Nicholas', 'son', 'Glen')]}]
['brother', 'son']