[Rebecca] and her brothers, [James] and [Roberto] are avid fishermen. [Roberto] used to fish with his father, [Pedro]. [Heather] fixed her husband [James] a special dinner yesterday because it was his birthday.
('Pedro', 'Heather')
[Rebecca] and her brothers, [James] and [Roberto] are avid fishermen. [Roberto] used to fish with his father, [Pedro]. [Heather] fixed her husband [James] a special dinner yesterday because it was his birthday.
[{('Pedro', 'daughter-in-law', 'Heather'): [('Pedro', 'son', 'James'), ('James', 'wife', 'Heather')]}, {('Pedro', 'son', 'James'): [('Pedro', 'daughter', 'Rebecca'), ('Rebecca', 'brother', 'James')]}, {('Pedro', 'daughter', 'Rebecca'): [('Pedro', 'son', 'Roberto'), ('Roberto', 'sister', 'Rebecca')]}]
['son', 'sister', 'brother', 'wife']