[Wayne] went to the store with his brother, [Nicholas]. [Dale] and his brother [Wayne] went out for lunch. [Dale] had a burger, and [Wayne] had a chicken sandwich.
('Dale', 'Nicholas')
[Dale] and his brother [Wayne] went out for lunch. [Dale] had a burger, and [Wayne] had a chicken sandwich. [Wayne] went to the store with his brother, [Nicholas].
[{('Dale', 'brother', 'Nicholas'): [('Dale', 'brother', 'Wayne'), ('Wayne', 'brother', 'Nicholas')]}]
['brother', 'brother']