[Robert]'s father's name is [Wayne]. [Clarence] who is [Wayne]'s father grounded [Wayne] after finding out what [Wayne] had done at school.
('Clarence', 'Robert')
[Clarence] who is [Wayne]'s father grounded [Wayne] after finding out what [Wayne] had done at school. [Robert]'s father's name is [Wayne].
[{('Clarence', 'grandson', 'Robert'): [('Clarence', 'son', 'Wayne'), ('Wayne', 'son', 'Robert')]}]
['son', 'son']