[Herman] and his uncle [David] love to go hunting together. [Jacob] and his son [David] went to the store to by bread.
('Jacob', 'Herman')
[Jacob] and his son [David] went to the store to by bread. [Herman] and his uncle [David] love to go hunting together.
[{('Jacob', 'brother', 'Herman'): [('Jacob', 'son', 'David'), ('David', 'uncle', 'Herman')]}]