[Theresa]'s sister, [Lillian], recently started acting. [Theresa] has a son named [Travis].
('Lillian', 'Travis')
[Theresa]'s sister, [Lillian], recently started acting. [Theresa] has a son named [Travis].
[{('Lillian', 'nephew', 'Travis'): [('Lillian', 'sister', 'Theresa'), ('Theresa', 'son', 'Travis')]}]
['sister', 'son']