[Dale]'s father, [Clarence], recently had a falling out with each other. [Dale] bought a book for his son [Travis].
('Travis', 'Clarence')
[Dale] bought a book for his son [Travis]. [Dale]'s father, [Clarence], recently had a falling out with each other.
[{('Travis', 'grandfather', 'Clarence'): [('Travis', 'father', 'Dale'), ('Dale', 'father', 'Clarence')]}]
['father', 'father']