[Nicholas] invited his brothers [Wayne] and [George] over for dinner one day and they had a good time.
('George', 'Wayne')
[Nicholas] invited his brothers [Wayne] and [George] over for dinner one day and they had a good time.
[{('George', 'brother', 'Wayne'): [('George', 'brother', 'Nicholas'), ('Nicholas', 'brother', 'Wayne')]}]
['brother', 'brother']