[John] loves his sister, [Constance] very much. [Constance] is just like her sister, [Stephanie].
('Stephanie', 'John')
[John] loves his sister, [Constance] very much. [Constance] is just like her sister, [Stephanie].
[{('Stephanie', 'brother', 'John'): [('Stephanie', 'sister', 'Constance'), ('Constance', 'brother', 'John')]}]