[Clarence] bought his granddaughter [Rosetta] a new car. [Rosetta]'s sister [Belva] was so jealous.
('Clarence', 'Belva')
[Clarence] bought his granddaughter [Rosetta] a new car. [Rosetta]'s sister [Belva] was so jealous.
[{('Clarence', 'granddaughter', 'Belva'): [('Clarence', 'granddaughter', 'Rosetta'), ('Rosetta', 'sister', 'Belva')]}]
['granddaughter', 'sister']