[Clarence] had strict rules for his daughter [Amy] growing up but that did n't prevent her from having her son [Dennis] at a young age.
('Dennis', 'Clarence')
[Clarence] had strict rules for his daughter [Amy] growing up but that did n't prevent her from having her son [Dennis] at a young age.
[{('Dennis', 'grandfather', 'Clarence'): [('Dennis', 'mother', 'Amy'), ('Amy', 'father', 'Clarence')]}]
['mother', 'father']