[Jerry]'s sister [April] asked him for some help planting her garden. [Clarence] loves spending time with his grandson [Jerry]. [Jerry] and [Clarence] go the the park a lot.
('April', 'Clarence')
[Jerry]'s sister [April] asked him for some help planting her garden. [Clarence] loves spending time with his grandson [Jerry]. [Jerry] and [Clarence] go the the park a lot.
[{('April', 'grandfather', 'Clarence'): [('April', 'brother', 'Jerry'), ('Jerry', 'grandfather', 'Clarence')]}]
['brother', 'grandfather']