[George] took his daughter [April] out for nachos. [George]'s son [Jerry] played with his friend instead.
('April', 'Jerry')
[George] took his daughter [April] out for nachos. [George]'s son [Jerry] played with his friend instead.
[{('April', 'brother', 'Jerry'): [('April', 'father', 'George'), ('George', 'son', 'Jerry')]}]
['father', 'son']