[Theresa] asked her husband, [Dale], to help her son, [Tony] with his homework.
('Dale', 'Tony')
[Theresa] asked her husband, [Dale], to help her son, [Tony] with his homework.
[{('Dale', 'son', 'Tony'): [('Dale', 'wife', 'Theresa'), ('Theresa', 'son', 'Tony')]}]
['wife', 'son']