[Hugh] enjoyed rough housing with his son [Brandon]. [Hugh]'s wife [David] did n't approve of it though. [Brandon] tripped his brother [Michael] in the living room.
('David', 'Michael')
[Hugh] enjoyed rough housing with his son [Brandon]. [Hugh]'s wife [David] did n't approve of it though. [Brandon] tripped his brother [Michael] in the living room.
[{('David', 'son', 'Michael'): [('David', 'husband', 'Hugh'), ('Hugh', 'son', 'Michael')]}, {('Hugh', 'son', 'Michael'): [('Hugh', 'son', 'Brandon'), ('Brandon', 'brother', 'Michael')]}]
['husband', 'son', 'brother']