[Harold] threw the ball to his son [Pedro]. [Harold] did n't like playing ball with his daughter [Beverly]. [Angelica] is the happy daughter of her adoring father [Robert]. [Pedro] is a great uncle of [Angelica].
('Robert', 'Beverly')
[Angelica] is the happy daughter of her adoring father [Robert]. [Pedro] is a great uncle of [Angelica]. [Harold] threw the ball to his son [Pedro]. [Harold] did n't like playing ball with his daughter [Beverly].
[{('Robert', 'sister', 'Beverly'): [('Robert', 'brother', 'Pedro'), ('Pedro', 'sister', 'Beverly')]}, {('Robert', 'brother', 'Pedro'): [('Robert', 'daughter', 'Angelica'), ('Angelica', 'uncle', 'Pedro')]}, {('Pedro', 'sister', 'Beverly'): [('Pedro', 'father', 'Harold'), ('Harold', 'daughter', 'Beverly')]}]
['daughter', 'uncle', 'father', 'daughter']