[Wayne] brought home straight A's to his father [Clarence]. [Nicholas] brought home straight C's to his father [Clarence].
('Nicholas', 'Wayne')
[Wayne] brought home straight A's to his father [Clarence]. [Nicholas] brought home straight C's to his father [Clarence].
[{('Nicholas', 'brother', 'Wayne'): [('Nicholas', 'father', 'Clarence'), ('Clarence', 'son', 'Wayne')]}]
['father', 'son']