[Amy] was talking about food with her sister [Nancy]. [Dale] and her sister [Nancy] decided to take a trip to Mexico together.
('Amy', 'Dale')
[Amy] was talking about food with her sister [Nancy]. [Dale] and her sister [Nancy] decided to take a trip to Mexico together.
[{('Amy', 'brother', 'Dale'): [('Amy', 'sister', 'Nancy'), ('Nancy', 'brother', 'Dale')]}]
['sister', 'brother']