[Lillian] does n't like having to babysit her younger brother, [Nicholas]. [Nicholas] went to the baseball game with his son [Glen]
('Lillian', 'Glen')
[Lillian] does n't like having to babysit her younger brother, [Nicholas]. [Nicholas] went to the baseball game with his son [Glen]
[{('Lillian', 'nephew', 'Glen'): [('Lillian', 'brother', 'Nicholas'), ('Nicholas', 'son', 'Glen')]}]
['brother', 'son']