[Ronald] and his sister [Lizzie] walked to school together every day, since they only lived two blocks away from the school. [Pedro] was so excited to introduce his new girlfriend to his mother, [Shantel]. [Lizzie] loved played dolls with her grandmother, [Shantel]. [Robert] is an engineer who loves to take his son [Ronald] to the science museum to help him learn about the world
('Robert', 'Pedro')
[Robert] is an engineer who loves to take his son [Ronald] to the science museum to help him learn about the world [Ronald] and his sister [Lizzie] walked to school together every day, since they only lived two blocks away from the school. [Lizzie] loved played dolls with her grandmother, [Shantel]. [Pedro] was so excited to introduce his new girlfriend to his mother, [Shantel].
[{('Robert', 'brother', 'Pedro'): [('Robert', 'mother', 'Shantel'), ('Shantel', 'son', 'Pedro')]}, {('Robert', 'mother', 'Shantel'): [('Robert', 'daughter', 'Lizzie'), ('Lizzie', 'grandmother', 'Shantel')]}, {('Robert', 'daughter', 'Lizzie'): [('Robert', 'son', 'Ronald'), ('Ronald', 'sister', 'Lizzie')]}]
['son', 'sister', 'grandmother', 'son']