[Nicholas]'s son, [Glen], loves going to the zoo with his grandmother [Ashley].
('Nicholas', 'Ashley')
[Nicholas]'s son, [Glen], loves going to the zoo with his grandmother [Ashley].
[{('Nicholas', 'mother', 'Ashley'): [('Nicholas', 'son', 'Glen'), ('Glen', 'grandmother', 'Ashley')]}]
['son', 'grandmother']