[Kevin] loves his mother [Nancy] very much. [Theresa]'s sister, [Nancy], recently started acting.
('Kevin', 'Theresa')
[Kevin] loves his mother [Nancy] very much. [Theresa]'s sister, [Nancy], recently started acting.
[{('Kevin', 'aunt', 'Theresa'): [('Kevin', 'mother', 'Nancy'), ('Nancy', 'sister', 'Theresa')]}]
['mother', 'sister']