[Antonio] took his son [Aaron] to the park on Saturday and while there they saw [Antonio]'s brother [Louis]. [Louis] took his son [Wayne] to soccer practice. [Pedro], who is [Wayne]'s uncle, got [Wayne] the video game he wanted for his birthday.
('Aaron', 'Pedro')
[Antonio] took his son [Aaron] to the park on Saturday and while there they saw [Antonio]'s brother [Louis]. [Louis] took his son [Wayne] to soccer practice. [Pedro], who is [Wayne]'s uncle, got [Wayne] the video game he wanted for his birthday.
[{('Aaron', 'uncle', 'Pedro'): [('Aaron', 'father', 'Antonio'), ('Antonio', 'brother', 'Pedro')]}, {('Antonio', 'brother', 'Pedro'): [('Antonio', 'brother', 'Louis'), ('Louis', 'brother', 'Pedro')]}, {('Louis', 'brother', 'Pedro'): [('Louis', 'son', 'Wayne'), ('Wayne', 'uncle', 'Pedro')]}]
['father', 'brother', 'son', 'uncle']