[Heidi] wanted to go fishing with her dad, [Wayne]. [Wayne] invited his father, [Clarence], along as well.
('Clarence', 'Heidi')
[Heidi] wanted to go fishing with her dad, [Wayne]. [Wayne] invited his father, [Clarence], along as well.
[{('Clarence', 'granddaughter', 'Heidi'): [('Clarence', 'son', 'Wayne'), ('Wayne', 'daughter', 'Heidi')]}]
['son', 'daughter']