[Nancy] was talking about food with her sister [Lillian]. [Kevin]'s mother [Nancy] secretly put money away for him to go on a trip next fall.
('Kevin', 'Lillian')
[Kevin]'s mother [Nancy] secretly put money away for him to go on a trip next fall. [Nancy] was talking about food with her sister [Lillian].
[{('Kevin', 'aunt', 'Lillian'): [('Kevin', 'mother', 'Nancy'), ('Nancy', 'sister', 'Lillian')]}]
['mother', 'sister']