[Nicholas]'s father's name is [Clarence]. [Theresa] is so proud that [Clarence], his father, quit smoking.
('Theresa', 'Nicholas')
[Theresa] is so proud that [Clarence], his father, quit smoking. [Nicholas]'s father's name is [Clarence].
[{('Theresa', 'brother', 'Nicholas'): [('Theresa', 'father', 'Clarence'), ('Clarence', 'son', 'Nicholas')]}]
['father', 'son']