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