[Wayne] liked to talk about his sister, [Natasha]. [David] has a good relationship with her sister [Cindy]. [Cindy] and her son [Wayne] enjoy spending time together.
('David', 'Natasha')
[David] has a good relationship with her sister [Cindy]. [Cindy] and her son [Wayne] enjoy spending time together. [Wayne] liked to talk about his sister, [Natasha].
[{('David', 'niece', 'Natasha'): [('David', 'sister', 'Cindy'), ('Cindy', 'daughter', 'Natasha')]}, {('Cindy', 'daughter', 'Natasha'): [('Cindy', 'son', 'Wayne'), ('Wayne', 'sister', 'Natasha')]}]
['sister', 'son', 'sister']