[Lena] took her younger sister [Cindy] to the carnival last weekend. [Lynn] took her younger sister [Lena] to the carnival last weekend. [Wayne]'s mother [Cindy] wanted to surprise him for his birthday, so she baked him a cake.
('Wayne', 'Lynn')
[Wayne]'s mother [Cindy] wanted to surprise him for his birthday, so she baked him a cake. [Lena] took her younger sister [Cindy] to the carnival last weekend. [Lynn] took her younger sister [Lena] to the carnival last weekend.
[{('Wayne', 'aunt', 'Lynn'): [('Wayne', 'mother', 'Cindy'), ('Cindy', 'sister', 'Lynn')]}, {('Cindy', 'sister', 'Lynn'): [('Cindy', 'sister', 'Lena'), ('Lena', 'sister', 'Lynn')]}]
['mother', 'sister', 'sister']