[Clarence] decided to give his son [Wayne], for his birthday, the latest version of Apple watch. [Robert] went to the park with his father, [Wayne].
('Robert', 'Clarence')
[Robert] went to the park with his father, [Wayne]. [Clarence] decided to give his son [Wayne], for his birthday, the latest version of Apple watch.
[{('Robert', 'grandfather', 'Clarence'): [('Robert', 'father', 'Wayne'), ('Wayne', 'father', 'Clarence')]}]
['father', 'father']