[Dorothy] and [Pedro] have a strong relationship. They have been married for ten years. [Antonio]'s daughter, [Bettie], has never gotten along well with his sister [Dorothy]. [Bettie] went to the park to feed birds with her grandfather [Harold].
('Pedro', 'Harold')
[Dorothy] and [Pedro] have a strong relationship. They have been married for ten years. [Antonio]'s daughter, [Bettie], has never gotten along well with his sister [Dorothy]. [Bettie] went to the park to feed birds with her grandfather [Harold].
[{('Pedro', 'father-in-law', 'Harold'): [('Pedro', 'wife', 'Dorothy'), ('Dorothy', 'father', 'Harold')]}, {('Dorothy', 'father', 'Harold'): [('Dorothy', 'brother', 'Antonio'), ('Antonio', 'father', 'Harold')]}, {('Antonio', 'father', 'Harold'): [('Antonio', 'daughter', 'Bettie'), ('Bettie', 'grandfather', 'Harold')]}]
['wife', 'brother', 'daughter', 'grandfather']