[Clarence] is the proud father of [Nancy]. [Nancy] is the mother of [Jacob] the traitor.
('Jacob', 'Clarence')
[Clarence] is the proud father of [Nancy]. [Nancy] is the mother of [Jacob] the traitor.
[{('Jacob', 'grandfather', 'Clarence'): [('Jacob', 'mother', 'Nancy'), ('Nancy', 'father', 'Clarence')]}]
['mother', 'father']