[Nicholas] decided to give his son [Glen], for his birthday, the latest version of Apple watch. [Dennis] loves to play baseball with his dad, [Nicholas].
('Glen', 'Dennis')
[Nicholas] decided to give his son [Glen], for his birthday, the latest version of Apple watch. [Dennis] loves to play baseball with his dad, [Nicholas].
[{('Glen', 'brother', 'Dennis'): [('Glen', 'father', 'Nicholas'), ('Nicholas', 'son', 'Dennis')]}]
['father', 'son']