[Wayne] and his wife [Nancy] are going to be at the play. [Wayne] was delighted to watch his son [Robert] steal third base in the Championship baseball game.
('Nancy', 'Robert')
[Wayne] and his wife [Nancy] are going to be at the play. [Wayne] was delighted to watch his son [Robert] steal third base in the Championship baseball game.
[{('Nancy', 'son', 'Robert'): [('Nancy', 'husband', 'Wayne'), ('Wayne', 'son', 'Robert')]}]
['husband', 'son']