[Nicholas] was angry with his brother [Wayne] for forgetting to pick him up from school. [Wayne]'s father, [Clarence], bought him some ice cream.
('Nicholas', 'Clarence')
[Nicholas] was angry with his brother [Wayne] for forgetting to pick him up from school. [Wayne]'s father, [Clarence], bought him some ice cream.
[{('Nicholas', 'father', 'Clarence'): [('Nicholas', 'brother', 'Wayne'), ('Wayne', 'father', 'Clarence')]}]
['brother', 'father']