[David] took her younger sister [Cindy] to the carnival last weekend. [Cindy] bought her son [Wayne] a car. [Wayne]'s sister [Wilhelmina] was jealous.
('Wilhelmina', 'David')
[Cindy] bought her son [Wayne] a car. [Wayne]'s sister [Wilhelmina] was jealous. [David] took her younger sister [Cindy] to the carnival last weekend.
[{('Wilhelmina', 'aunt', 'David'): [('Wilhelmina', 'mother', 'Cindy'), ('Cindy', 'sister', 'David')]}, {('Wilhelmina', 'mother', 'Cindy'): [('Wilhelmina', 'brother', 'Wayne'), ('Wayne', 'mother', 'Cindy')]}]
['brother', 'mother', 'sister']