[Wayne] was delighted to watch his son [Robert] steal third base in the Championship baseball game. [Ashley] read her son [Wayne] a bedtime story every night.
('Ashley', 'Robert')
[Ashley] read her son [Wayne] a bedtime story every night. [Wayne] was delighted to watch his son [Robert] steal third base in the Championship baseball game.
[{('Ashley', 'grandson', 'Robert'): [('Ashley', 'son', 'Wayne'), ('Wayne', 'son', 'Robert')]}]
['son', 'son']