[June]'s grandfather [Clarence] took her and her sister [Charlotte] out to dinner.
('Clarence', 'Charlotte')
[June]'s grandfather [Clarence] took her and her sister [Charlotte] out to dinner.
[{('Clarence', 'granddaughter', 'Charlotte'): [('Clarence', 'granddaughter', 'June'), ('June', 'sister', 'Charlotte')]}]
['granddaughter', 'sister']