[Pamela] and her sister [Martha] have never been close. Still, they love each other because they are family. [Lena]'s mom, [Tina] got ready for the party. [Pamela] was talking about food with her sister [Tina].
('Martha', 'Lena')
[Pamela] and her sister [Martha] have never been close. Still, they love each other because they are family. [Pamela] was talking about food with her sister [Tina]. [Lena]'s mom, [Tina] got ready for the party.
[{('Martha', 'mother', 'Lena'): [('Martha', 'sister', 'Pamela'), ('Pamela', 'mother', 'Lena')]}, {('Pamela', 'mother', 'Lena'): [('Pamela', 'sister', 'Tina'), ('Tina', 'mother', 'Lena')]}]
['sister', 'sister', 'mother']