[Roberto] does n't like his aunt [Tracy] very much. [Tracy], on the other hand, adores [Roberto], and would do anything for him. [Roberto] and his father [Pedro] went jogging by the lake. [Aaron] and [Bettie] are siblings. [Bettie] looks just like her mother, [Tracy].
('Pedro', 'Aaron')
[Roberto] and his father [Pedro] went jogging by the lake. [Roberto] does n't like his aunt [Tracy] very much. [Tracy], on the other hand, adores [Roberto], and would do anything for him. [Aaron] and [Bettie] are siblings. [Bettie] looks just like her mother, [Tracy].
[{('Pedro', 'nephew', 'Aaron'): [('Pedro', 'sister', 'Tracy'), ('Tracy', 'son', 'Aaron')]}, {('Tracy', 'son', 'Aaron'): [('Tracy', 'daughter', 'Bettie'), ('Bettie', 'brother', 'Aaron')]}, {('Pedro', 'sister', 'Tracy'): [('Pedro', 'son', 'Roberto'), ('Roberto', 'aunt', 'Tracy')]}]
['son', 'aunt', 'daughter', 'brother']