[John] took his grandson [Clarence] to the park He met his wife [Ashley] there.
('Ashley', 'John')
[John] took his grandson [Clarence] to the park He met his wife [Ashley] there.
[{('Ashley', 'grandson', 'John'): [('Ashley', 'husband', 'Clarence'), ('Clarence', 'grandson', 'John')]}]
['husband', 'grandson']