[Ashley] and her son [Wayne] went to the zoo and then out to dinner yesterday. [Wayne] is an engineer who loves to take his son [Kevin] to the science museum to help him learn about the world
('Ashley', 'Kevin')
[Ashley] and her son [Wayne] went to the zoo and then out to dinner yesterday. [Wayne] is an engineer who loves to take his son [Kevin] to the science museum to help him learn about the world
[{('Ashley', 'grandson', 'Kevin'): [('Ashley', 'son', 'Wayne'), ('Wayne', 'son', 'Kevin')]}]
['son', 'son']