[Travis]'s mother [Theresa] bought a Christmas gift for his sister, [Rosetta].
('Rosetta', 'Theresa')
[Travis]'s mother [Theresa] bought a Christmas gift for his sister, [Rosetta].
[{('Rosetta', 'mother', 'Theresa'): [('Rosetta', 'brother', 'Travis'), ('Travis', 'mother', 'Theresa')]}]
['brother', 'mother']