[Dale] loved teaching his son, [Nicolas], baseball. [Dale] is proud of his son. His name is [James].
('James', 'Nicolas')
[Dale] is proud of his son. His name is [James]. [Dale] loved teaching his son, [Nicolas], baseball.
[{('James', 'brother', 'Nicolas'): [('James', 'father', 'Dale'), ('Dale', 'son', 'Nicolas')]}]
['father', 'son']