[Pedro]'s son is [Jeffrey]. [Jeffrey] and his father always go fishing together on Sundays and have a great time together. [Rebecca] and her father [Pedro] went for a hike in the mountains. [James] and her brother [Roberto] were playing in the park. [Roberto] saw his sister [Rebecca] getting ice cream and wanted some too.
('James', 'Jeffrey')
[James] and her brother [Roberto] were playing in the park. [Roberto] saw his sister [Rebecca] getting ice cream and wanted some too. [Rebecca] and her father [Pedro] went for a hike in the mountains. [Pedro]'s son is [Jeffrey]. [Jeffrey] and his father always go fishing together on Sundays and have a great time together.
[{('James', 'brother', 'Jeffrey'): [('James', 'brother', 'Roberto'), ('Roberto', 'brother', 'Jeffrey')]}, {('Roberto', 'brother', 'Jeffrey'): [('Roberto', 'father', 'Pedro'), ('Pedro', 'son', 'Jeffrey')]}, {('Roberto', 'father', 'Pedro'): [('Roberto', 'sister', 'Rebecca'), ('Rebecca', 'father', 'Pedro')]}]
['brother', 'sister', 'father', 'son']