[Cindy] was playing hide-and-seek with her sister [Lynn]. [Lynn] took her daughter, [Andrea], out to High Tea yesterday afternoon. [Cindy] and her sister [David] played golf together. [Cindy] won easily.
('David', 'Andrea')
[Cindy] and her sister [David] played golf together. [Cindy] won easily. [Cindy] was playing hide-and-seek with her sister [Lynn]. [Lynn] took her daughter, [Andrea], out to High Tea yesterday afternoon.
[{('David', 'niece', 'Andrea'): [('David', 'sister', 'Lynn'), ('Lynn', 'daughter', 'Andrea')]}, {('David', 'sister', 'Lynn'): [('David', 'sister', 'Cindy'), ('Cindy', 'sister', 'Lynn')]}]
['sister', 'sister', 'daughter']