[Pete] and his sister [Wilhelmina] were hoping for a snow day. [David] was eager to see her niece, [Wilhelmina]. They had n't seen each other in ages [Cindy] read her son [Pete] a bedtime story every night.
('Cindy', 'David')
[Cindy] read her son [Pete] a bedtime story every night. [Pete] and his sister [Wilhelmina] were hoping for a snow day. [David] was eager to see her niece, [Wilhelmina]. They had n't seen each other in ages
[{('Cindy', 'sister', 'David'): [('Cindy', 'daughter', 'Wilhelmina'), ('Wilhelmina', 'aunt', 'David')]}, {('Cindy', 'daughter', 'Wilhelmina'): [('Cindy', 'son', 'Pete'), ('Pete', 'sister', 'Wilhelmina')]}]
['son', 'sister', 'aunt']