[Belva] is taking her grandfather [Clarence] shopping. [Rosetta] is taking a trip to see her sister [Belva].
('Rosetta', 'Clarence')
[Rosetta] is taking a trip to see her sister [Belva]. [Belva] is taking her grandfather [Clarence] shopping.
[{('Rosetta', 'grandfather', 'Clarence'): [('Rosetta', 'sister', 'Belva'), ('Belva', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']