[Clarence] loves spending time with his grandson [Jerry]. [Jerry] and [Clarence] go the the park a lot. [George] took his son [Jerry] to school this morning because he missed the bus.
('George', 'Clarence')
[George] took his son [Jerry] to school this morning because he missed the bus. [Clarence] loves spending time with his grandson [Jerry]. [Jerry] and [Clarence] go the the park a lot.
[{('George', 'father', 'Clarence'): [('George', 'son', 'Jerry'), ('Jerry', 'grandfather', 'Clarence')]}]
['son', 'grandfather']