[Clarence] is frustrated teaching his son how to drive. His son is [Dale]. [Dale] was having an argument with her sister, [Nancy].
('Clarence', 'Nancy')
[Clarence] is frustrated teaching his son how to drive. His son is [Dale]. [Dale] was having an argument with her sister, [Nancy].
[{('Clarence', 'daughter', 'Nancy'): [('Clarence', 'son', 'Dale'), ('Dale', 'sister', 'Nancy')]}]
['son', 'sister']