[Lena] made a pie for her daughter [Martha]. [Martha]'s sister [Tina] really enjoyed it. [Frances] took her daughter [Lena] to see her very first ballet performance.
('Tina', 'Frances')
[Lena] made a pie for her daughter [Martha]. [Martha]'s sister [Tina] really enjoyed it. [Frances] took her daughter [Lena] to see her very first ballet performance.
[{('Tina', 'grandmother', 'Frances'): [('Tina', 'mother', 'Lena'), ('Lena', 'mother', 'Frances')]}, {('Tina', 'mother', 'Lena'): [('Tina', 'sister', 'Martha'), ('Martha', 'mother', 'Lena')]}]
['sister', 'mother', 'mother']