[Dale] bought a book for his father [Clarence]. [Dale] who is [Tony]'s father grounded [Tony] after finding out what [Tony] had done at school.
('Clarence', 'Tony')
[Dale] bought a book for his father [Clarence]. [Dale] who is [Tony]'s father grounded [Tony] after finding out what [Tony] had done at school.
[{('Clarence', 'grandson', 'Tony'): [('Clarence', 'son', 'Dale'), ('Dale', 'son', 'Tony')]}]
['son', 'son']