Sometimes [Rosetta] has a hard time telling her mother, [Theresa] and her Mother's twin sister [Nancy] apart. They are identical.
('Rosetta', 'Nancy')
Sometimes [Rosetta] has a hard time telling her mother, [Theresa] and her Mother's twin sister [Nancy] apart. They are identical.
[{('Rosetta', 'aunt', 'Nancy'): [('Rosetta', 'mother', 'Theresa'), ('Theresa', 'sister', 'Nancy')]}]
['mother', 'sister']