[Wayne] 'son [Jeff] could not believe that his father bought him a coffee machine for his birthday. [Ashley] took her son [Wayne] to the park for the afternoon.
('Ashley', 'Jeff')
[Ashley] took her son [Wayne] to the park for the afternoon. [Wayne] 'son [Jeff] could not believe that his father bought him a coffee machine for his birthday.
[{('Ashley', 'grandson', 'Jeff'): [('Ashley', 'son', 'Wayne'), ('Wayne', 'son', 'Jeff')]}]
['son', 'son']