[Aaron] bought a book for his father [Antonio]. [Robert] took his sister [Beverly] out to dinner for her birthday. [Beverly] is a woman with a nephew named [Kevin]. [Aaron] is happy that his brother, [Kevin], is becoming successful.
('Antonio', 'Robert')
[Aaron] bought a book for his father [Antonio]. [Aaron] is happy that his brother, [Kevin], is becoming successful. [Beverly] is a woman with a nephew named [Kevin]. [Robert] took his sister [Beverly] out to dinner for her birthday.
[{('Antonio', 'brother', 'Robert'): [('Antonio', 'sister', 'Beverly'), ('Beverly', 'brother', 'Robert')]}, {('Antonio', 'sister', 'Beverly'): [('Antonio', 'son', 'Kevin'), ('Kevin', 'aunt', 'Beverly')]}, {('Antonio', 'son', 'Kevin'): [('Antonio', 'son', 'Aaron'), ('Aaron', 'brother', 'Kevin')]}]
['son', 'brother', 'aunt', 'brother']