[Rosetta] is looking for a good gift for her sister [Belva]. [Charlotte] was sewing a sweater for her sister [Belva].
('Rosetta', 'Charlotte')
[Rosetta] is looking for a good gift for her sister [Belva]. [Charlotte] was sewing a sweater for her sister [Belva].
[{('Rosetta', 'sister', 'Charlotte'): [('Rosetta', 'sister', 'Belva'), ('Belva', 'sister', 'Charlotte')]}]
['sister', 'sister']