[Nicholas] who is [Dennis]'s father grounded [Dennis] after finding out what [Dennis] had done at school. [Dennis] cooked a lovely porkchop for his grandmother [Ashley].
('Nicholas', 'Ashley')
[Nicholas] who is [Dennis]'s father grounded [Dennis] after finding out what [Dennis] had done at school. [Dennis] cooked a lovely porkchop for his grandmother [Ashley].
[{('Nicholas', 'mother', 'Ashley'): [('Nicholas', 'son', 'Dennis'), ('Dennis', 'grandmother', 'Ashley')]}]
['son', 'grandmother']