[Jerry] ran up to his sister [April] for help. When she could n't help him, he turned to his grandfather [Clarence].
('Clarence', 'April')
[Jerry] ran up to his sister [April] for help. When she could n't help him, he turned to his grandfather [Clarence].
[{('Clarence', 'granddaughter', 'April'): [('Clarence', 'grandson', 'Jerry'), ('Jerry', 'sister', 'April')]}]
['grandson', 'sister']