[Dale] and his brother [Wayne] went to the boxing match. [Lillian] was upset her brother [Dale] did n't invite her.
('Lillian', 'Wayne')
[Dale] and his brother [Wayne] went to the boxing match. [Lillian] was upset her brother [Dale] did n't invite her.
[{('Lillian', 'brother', 'Wayne'): [('Lillian', 'brother', 'Dale'), ('Dale', 'brother', 'Wayne')]}]
['brother', 'brother']