[Clarence] is a benevolent grandfather, and [Michael] is his young grandson. [Michael] likes to watch boxing with his brother. His name is [Glen].
('Glen', 'Clarence')
[Michael] likes to watch boxing with his brother. His name is [Glen]. [Clarence] is a benevolent grandfather, and [Michael] is his young grandson.
[{('Glen', 'grandfather', 'Clarence'): [('Glen', 'brother', 'Michael'), ('Michael', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']