[Clarence] loves his daughter [Nancy]. [Nancy]'s son, [Jacob], recently started a pawn shop.
('Clarence', 'Jacob')
[Clarence] loves his daughter [Nancy]. [Nancy]'s son, [Jacob], recently started a pawn shop.
[{('Clarence', 'grandson', 'Jacob'): [('Clarence', 'daughter', 'Nancy'), ('Nancy', 'son', 'Jacob')]}]
['daughter', 'son']