[Cindy] and her son [Pete] went to the zoo and then out to dinner yesterday. [Wilhelmina] and [Pete] had a picnic at the park. They had sandwiches and salad. [Cindy] needed to go to the store. [Cindy] asked her sister [Lynn] for a ride.
('Lynn', 'Wilhelmina')
[Cindy] needed to go to the store. [Cindy] asked her sister [Lynn] for a ride. [Cindy] and her son [Pete] went to the zoo and then out to dinner yesterday. [Wilhelmina] and [Pete] had a picnic at the park. They had sandwiches and salad.
[{('Lynn', 'niece', 'Wilhelmina'): [('Lynn', 'sister', 'Cindy'), ('Cindy', 'daughter', 'Wilhelmina')]}, {('Cindy', 'daughter', 'Wilhelmina'): [('Cindy', 'son', 'Pete'), ('Pete', 'sister', 'Wilhelmina')]}]
['sister', 'son', 'sister']