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