[Dale] and his brother [Wayne] went to the arcade. They had a wonderful time. [Dale] needed his brother, [Nicholas], to help with a problem
('Wayne', 'Nicholas')
[Dale] and his brother [Wayne] went to the arcade. They had a wonderful time. [Dale] needed his brother, [Nicholas], to help with a problem
[{('Wayne', 'brother', 'Nicholas'): [('Wayne', 'brother', 'Dale'), ('Dale', 'brother', 'Nicholas')]}]
['brother', 'brother']