[Roberto] went to the park with his sister, [Rebecca], and his father, [Pedro]. The three of them had a wonderful time there. [Jeffrey] is love by his father [Pedro]. [James] loves his brother [Jeffrey].
('Rebecca', 'James')
[Roberto] went to the park with his sister, [Rebecca], and his father, [Pedro]. The three of them had a wonderful time there. [Jeffrey] is love by his father [Pedro]. [James] loves his brother [Jeffrey].
[{('Rebecca', 'brother', 'James'): [('Rebecca', 'father', 'Pedro'), ('Pedro', 'son', 'James')]}, {('Pedro', 'son', 'James'): [('Pedro', 'son', 'Jeffrey'), ('Jeffrey', 'brother', 'James')]}, {('Rebecca', 'father', 'Pedro'): [('Rebecca', 'brother', 'Roberto'), ('Roberto', 'father', 'Pedro')]}]
['brother', 'father', 'son', 'brother']