[Clarence]'s grandson [Robert] and wife [Ashley] had a nice dinner together this evening.
('Ashley', 'Robert')
[Clarence]'s grandson [Robert] and wife [Ashley] had a nice dinner together this evening.
[{('Ashley', 'grandson', 'Robert'): [('Ashley', 'husband', 'Clarence'), ('Clarence', 'grandson', 'Robert')]}]
['husband', 'grandson']