[Wesley]'s son [Irvin] and sister [Cindy] went camping together last weekend. [Irvin] likes to go fishing with his sister. Her name is [Tina].
('Cindy', 'Tina')
[Wesley]'s son [Irvin] and sister [Cindy] went camping together last weekend. [Irvin] likes to go fishing with his sister. Her name is [Tina].
[{('Cindy', 'niece', 'Tina'): [('Cindy', 'brother', 'Wesley'), ('Wesley', 'daughter', 'Tina')]}, {('Wesley', 'daughter', 'Tina'): [('Wesley', 'son', 'Irvin'), ('Irvin', 'sister', 'Tina')]}]
['brother', 'son', 'sister']