[Robert] and his brother [Antonio] were rarely seen apart. [Ronald]'s dad [Robert] is the CEO of the company. [Ronald] was so excited to introduce his new girlfriend to his mother, [Marie]. [Dorothy] is looking for a good gift for her sister [Marie].
('Dorothy', 'Antonio')
[Dorothy] is looking for a good gift for her sister [Marie]. [Ronald] was so excited to introduce his new girlfriend to his mother, [Marie]. [Ronald]'s dad [Robert] is the CEO of the company. [Robert] and his brother [Antonio] were rarely seen apart.
[{('Dorothy', 'brother', 'Antonio'): [('Dorothy', 'sister', 'Marie'), ('Marie', 'brother', 'Antonio')]}, {('Marie', 'brother', 'Antonio'): [('Marie', 'son', 'Ronald'), ('Ronald', 'uncle', 'Antonio')]}, {('Ronald', 'uncle', 'Antonio'): [('Ronald', 'father', 'Robert'), ('Robert', 'brother', 'Antonio')]}]
['sister', 'son', 'father', 'brother']