[Theresa] and her sister [Nancy] went shopping at the mall. [Theresa]'s daughter [Belva] stayed home to study.
('Nancy', 'Belva')
[Theresa] and her sister [Nancy] went shopping at the mall. [Theresa]'s daughter [Belva] stayed home to study.
[{('Nancy', 'niece', 'Belva'): [('Nancy', 'sister', 'Theresa'), ('Theresa', 'daughter', 'Belva')]}]
['sister', 'daughter']