[Jacob] asked his mom [Nancy] if she would bake him a cake. [Nancy] told him she would n't, because [Jacob] was getting fat and did n't need the extra calories. [Amy] and her sister [Nancy] braided each other's hair before school.
('Jacob', 'Amy')
[Jacob] asked his mom [Nancy] if she would bake him a cake. [Nancy] told him she would n't, because [Jacob] was getting fat and did n't need the extra calories. [Amy] and her sister [Nancy] braided each other's hair before school.
[{('Jacob', 'aunt', 'Amy'): [('Jacob', 'mother', 'Nancy'), ('Nancy', 'sister', 'Amy')]}]
['mother', 'sister']