[Theresa] went on a fishing trip with her youngest child, [Travis], and her brother [Nicholas].
('Nicholas', 'Travis')
[Theresa] went on a fishing trip with her youngest child, [Travis], and her brother [Nicholas].
[{('Nicholas', 'nephew', 'Travis'): [('Nicholas', 'sister', 'Theresa'), ('Theresa', 'son', 'Travis')]}]
['sister', 'son']