[Carrie] is best friends with her sister [Natasha]. [Natasha] does not get along with her brother [Richard]. [Anna] is a woman with a sister named [Natasha].
('Richard', 'Anna')
[Carrie] is best friends with her sister [Natasha]. [Natasha] does not get along with her brother [Richard]. [Anna] is a woman with a sister named [Natasha].
[{('Richard', 'sister', 'Anna'): [('Richard', 'sister', 'Carrie'), ('Carrie', 'sister', 'Anna')]}, {('Carrie', 'sister', 'Anna'): [('Carrie', 'sister', 'Natasha'), ('Natasha', 'sister', 'Anna')]}]
['sister', 'sister', 'sister']