[Theresa] was talking about food with her sister [Nancy]. [Nancy] was playing hide-and-seek with her sister [Lillian].
('Theresa', 'Lillian')
[Theresa] was talking about food with her sister [Nancy]. [Nancy] was playing hide-and-seek with her sister [Lillian].
[{('Theresa', 'sister', 'Lillian'): [('Theresa', 'sister', 'Nancy'), ('Nancy', 'sister', 'Lillian')]}]
['sister', 'sister']