[Jerry] asked his father [George] if he could borrow some money. [Clarence] went hunting with his son, [George].
('Jerry', 'Clarence')
[Jerry] asked his father [George] if he could borrow some money. [Clarence] went hunting with his son, [George].
[{('Jerry', 'grandfather', 'Clarence'): [('Jerry', 'father', 'George'), ('George', 'father', 'Clarence')]}]
['father', 'father']