[Glen] love his brother [Michael]. They are always playing together. [Glen]'s dad [Nicholas] is the CEO of the company.
('Michael', 'Nicholas')
[Glen] love his brother [Michael]. They are always playing together. [Glen]'s dad [Nicholas] is the CEO of the company.
[{('Michael', 'father', 'Nicholas'): [('Michael', 'brother', 'Glen'), ('Glen', 'father', 'Nicholas')]}]
['brother', 'father']