[Robert] is taking his son [Ronald] on a camping trip for the weekend. [Pedro] and his sister [Beverly] went to the park. [Ronald]'s uncle [Pedro] loved hanging out with him. [Robert] went to the baseball game with his son [Ronald]
('Ronald', 'Beverly')
[Robert] is taking his son [Ronald] on a camping trip for the weekend. [Robert] went to the baseball game with his son [Ronald] [Ronald]'s uncle [Pedro] loved hanging out with him. [Pedro] and his sister [Beverly] went to the park.
[{('Ronald', 'aunt', 'Beverly'): [('Ronald', 'father', 'Robert'), ('Robert', 'sister', 'Beverly')]}, {('Robert', 'sister', 'Beverly'): [('Robert', 'brother', 'Pedro'), ('Pedro', 'sister', 'Beverly')]}, {('Robert', 'brother', 'Pedro'): [('Robert', 'son', 'Ronald'), ('Ronald', 'uncle', 'Pedro')]}]
['father', 'son', 'uncle', 'sister']