[Frances] took her daughter [David] to see her very first ballet performance. [Frances] bought a nice gift for her daughter [Lena]. [Lena] bought an even more expensive gift for her own daughter [Pamela].
('David', 'Pamela')
[Frances] took her daughter [David] to see her very first ballet performance. [Frances] bought a nice gift for her daughter [Lena]. [Lena] bought an even more expensive gift for her own daughter [Pamela].
[{('David', 'niece', 'Pamela'): [('David', 'sister', 'Lena'), ('Lena', 'daughter', 'Pamela')]}, {('David', 'sister', 'Lena'): [('David', 'mother', 'Frances'), ('Frances', 'daughter', 'Lena')]}]
['mother', 'daughter', 'daughter']