[Clarence] was proud of his son, [Dale]. [George] took his brother [Dale] to get lunch at a local diner.
('Clarence', 'George')
[Clarence] was proud of his son, [Dale]. [George] took his brother [Dale] to get lunch at a local diner.
[{('Clarence', 'son', 'George'): [('Clarence', 'son', 'Dale'), ('Dale', 'brother', 'George')]}]
['son', 'brother']