[Michael] wanted to get a good gift for his sister, [Emily] [Glen] and his brother [Michael] are constantly trying to one up each other.
('Glen', 'Emily')
[Glen] and his brother [Michael] are constantly trying to one up each other. [Michael] wanted to get a good gift for his sister, [Emily]
[{('Glen', 'sister', 'Emily'): [('Glen', 'brother', 'Michael'), ('Michael', 'sister', 'Emily')]}]
['brother', 'sister']