[Robert] and his sister [Tracy] took their father out to eat for his birthday. They had a great time. [Roberto] id [Dorothy]'s only child. They have a really strong bond. They spend a lot of their free time together. [Dorothy]'s brother [Robert] was going to be the star in the new show. [Pedro] and his son [Roberto] went to the store to by bread.
('Pedro', 'Tracy')
[Pedro] and his son [Roberto] went to the store to by bread. [Roberto] id [Dorothy]'s only child. They have a really strong bond. They spend a lot of their free time together. [Dorothy]'s brother [Robert] was going to be the star in the new show. [Robert] and his sister [Tracy] took their father out to eat for his birthday. They had a great time.
[{('Pedro', 'sister', 'Tracy'): [('Pedro', 'son', 'Roberto'), ('Roberto', 'aunt', 'Tracy')]}, {('Roberto', 'aunt', 'Tracy'): [('Roberto', 'mother', 'Dorothy'), ('Dorothy', 'sister', 'Tracy')]}, {('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'sister', 'Tracy')]}]
['son', 'mother', 'brother', 'sister']