[Clarence] is a proud grandfather of [Glen]. [Glen] has a great relationship with his mother [Amy].
('Amy', 'Clarence')
[Clarence] is a proud grandfather of [Glen]. [Glen] has a great relationship with his mother [Amy].
[{('Amy', 'father', 'Clarence'): [('Amy', 'son', 'Glen'), ('Glen', 'grandfather', 'Clarence')]}]
['son', 'grandfather']