[Louis] and his brother [Pedro] went to the park. They threw a ball around and played with their dog. [Samuel] and his sister [Nettie] got their mother [Nettie] a new computer for her birthday. She really liked it. [Nettie] loves to visit her Uncle [Antonio] on his farm. [Louis] is helping his son study. His name is [Samuel].
('Pedro', 'Antonio')
[Louis] and his brother [Pedro] went to the park. They threw a ball around and played with their dog. [Louis] is helping his son study. His name is [Samuel]. [Samuel] and his sister [Nettie] got their mother [Nettie] a new computer for her birthday. She really liked it. [Nettie] loves to visit her Uncle [Antonio] on his farm.
[{('Pedro', 'brother', 'Antonio'): [('Pedro', 'brother', 'Louis'), ('Louis', 'brother', 'Antonio')]}, {('Louis', 'brother', 'Antonio'): [('Louis', 'daughter', 'Nettie'), ('Nettie', 'uncle', 'Antonio')]}, {('Louis', 'daughter', 'Nettie'): [('Louis', 'son', 'Samuel'), ('Samuel', 'sister', 'Nettie')]}]
['brother', 'son', 'sister', 'uncle']