[Kevin]'s father, [Wayne], bought him some ice cream. [Wayne] asked his father [Clarence] if he could borrow some money.
('Kevin', 'Clarence')
[Kevin]'s father, [Wayne], bought him some ice cream. [Wayne] asked his father [Clarence] if he could borrow some money.
[{('Kevin', 'grandfather', 'Clarence'): [('Kevin', 'father', 'Wayne'), ('Wayne', 'father', 'Clarence')]}]
['father', 'father']