[George] called his brother, [Wayne], to confirm when [Wayne]'s sister, [Theresa], was coming to the dinner.
('Theresa', 'George')
[George] called his brother, [Wayne], to confirm when [Wayne]'s sister, [Theresa], was coming to the dinner.
[{('Theresa', 'brother', 'George'): [('Theresa', 'brother', 'Wayne'), ('Wayne', 'brother', 'George')]}]
['brother', 'brother']