Last night, [Cindy] went out with her sister [David], accompanied by [Cindy]'s daughter [Wilhelmina]. [Anna] was sewing a sweater for her sister [Wilhelmina].
('David', 'Anna')
Last night, [Cindy] went out with her sister [David], accompanied by [Cindy]'s daughter [Wilhelmina]. [Anna] was sewing a sweater for her sister [Wilhelmina].
[{('David', 'niece', 'Anna'): [('David', 'sister', 'Cindy'), ('Cindy', 'daughter', 'Anna')]}, {('Cindy', 'daughter', 'Anna'): [('Cindy', 'daughter', 'Wilhelmina'), ('Wilhelmina', 'sister', 'Anna')]}]
['sister', 'daughter', 'sister']