[Jeffrey] idolizes his uncle, [Louis]. [Pedro] took his son [Jeffrey] to the park to play frisbee. [Pedro]'s sister, [Beverly], showed up an hour later and brought cold drinks. [Louis] and his sister [Marie] are going for a walk.
('Beverly', 'Marie')
[Pedro] took his son [Jeffrey] to the park to play frisbee. [Pedro]'s sister, [Beverly], showed up an hour later and brought cold drinks. [Jeffrey] idolizes his uncle, [Louis]. [Louis] and his sister [Marie] are going for a walk.
[{('Beverly', 'sister', 'Marie'): [('Beverly', 'brother', 'Pedro'), ('Pedro', 'sister', 'Marie')]}, {('Pedro', 'sister', 'Marie'): [('Pedro', 'brother', 'Louis'), ('Louis', 'sister', 'Marie')]}, {('Pedro', 'brother', 'Louis'): [('Pedro', 'son', 'Jeffrey'), ('Jeffrey', 'uncle', 'Louis')]}]
['brother', 'son', 'uncle', 'sister']