[Ashley] sent her son [Dale] some money for the holidays. [Dale] used the money to buy his son [Tony] a new toy car.
('Ashley', 'Tony')
[Ashley] sent her son [Dale] some money for the holidays. [Dale] used the money to buy his son [Tony] a new toy car.
[{('Ashley', 'grandson', 'Tony'): [('Ashley', 'son', 'Dale'), ('Dale', 'son', 'Tony')]}]
['son', 'son']