[Lena] wanted to buy her daughter [Tina] a new dress for her birthday. But her other daughter [Mildred] and her own mom, [Frances], had already bought [Tina] better presents.
('Mildred', 'Frances')
[Lena] wanted to buy her daughter [Tina] a new dress for her birthday. But her other daughter [Mildred] and her own mom, [Frances], had already bought [Tina] better presents.
[{('Mildred', 'grandmother', 'Frances'): [('Mildred', 'mother', 'Lena'), ('Lena', 'mother', 'Frances')]}, {('Lena', 'mother', 'Frances'): [('Lena', 'daughter', 'Tina'), ('Tina', 'grandmother', 'Frances')]}]
['mother', 'daughter', 'grandmother']