[Cindy] recently went on a trip to visit her niece [Marie]. [Marie] and her mother [David] went to volunteer at the homeless shelter last weekend. [Cindy] is taking a trip to see her sister [Lynn].
('David', 'Lynn')
[Marie] and her mother [David] went to volunteer at the homeless shelter last weekend. [Cindy] recently went on a trip to visit her niece [Marie]. [Cindy] is taking a trip to see her sister [Lynn].
[{('David', 'sister', 'Lynn'): [('David', 'sister', 'Cindy'), ('Cindy', 'sister', 'Lynn')]}, {('David', 'sister', 'Cindy'): [('David', 'daughter', 'Marie'), ('Marie', 'aunt', 'Cindy')]}]
['daughter', 'aunt', 'sister']