[Frances] took her daughter, [Cindy], to lunch. [Cindy]'s niece [Martha] was a massive fan of Pokemon. [Martha] and her mother [Lena] went to volunteer at the homeless shelter last weekend.
('Lena', 'Frances')
[Martha] and her mother [Lena] went to volunteer at the homeless shelter last weekend. [Cindy]'s niece [Martha] was a massive fan of Pokemon. [Frances] took her daughter, [Cindy], to lunch.
[{('Lena', 'mother', 'Frances'): [('Lena', 'sister', 'Cindy'), ('Cindy', 'mother', 'Frances')]}, {('Lena', 'sister', 'Cindy'): [('Lena', 'daughter', 'Martha'), ('Martha', 'aunt', 'Cindy')]}]
['daughter', 'aunt', 'mother']