[Nicholas] did n't get along very well with his sister [Nancy] for some reason. [Nancy] gave her brother [George] a new sweater for Christmas.
('Nicholas', 'George')
[Nicholas] did n't get along very well with his sister [Nancy] for some reason. [Nancy] gave her brother [George] a new sweater for Christmas.
[{('Nicholas', 'brother', 'George'): [('Nicholas', 'sister', 'Nancy'), ('Nancy', 'brother', 'George')]}]
['sister', 'brother']