[Nancy] took her daughter [Heidi] to the store to find her some new boots for the cold winter weather. [Nancy] is getting married. She is looking forward to her sister, [Amy], attending. They have n't seen each other since [Amy] relocated to California with her husband 3 years ago.
('Heidi', 'Amy')
[Nancy] took her daughter [Heidi] to the store to find her some new boots for the cold winter weather. [Nancy] is getting married. She is looking forward to her sister, [Amy], attending. They have n't seen each other since [Amy] relocated to California with her husband 3 years ago.
[{('Heidi', 'aunt', 'Amy'): [('Heidi', 'mother', 'Nancy'), ('Nancy', 'sister', 'Amy')]}]
['mother', 'sister']