[Dale] took is son [Tony] and mother [Ashley] out to a lovely summer brunch.
('Ashley', 'Tony')
[Dale] took is son [Tony] and mother [Ashley] out to a lovely summer brunch.
[{('Ashley', 'grandson', 'Tony'): [('Ashley', 'son', 'Dale'), ('Dale', 'son', 'Tony')]}]
['son', 'son']