[George] went jogging with his brother [Dale]. [Dale]'s brother [Wayne] prefers running instead.
('Wayne', 'George')
[George] went jogging with his brother [Dale]. [Dale]'s brother [Wayne] prefers running instead.
[{('Wayne', 'brother', 'George'): [('Wayne', 'brother', 'Dale'), ('Dale', 'brother', 'George')]}]
['brother', 'brother']