[Wesley] asked his sister, [Cindy], if she would babysit his son, [Chris], for the night. [Lena] asked her son [Chris] to help her fix her television.
('Lena', 'Cindy')
[Lena] asked her son [Chris] to help her fix her television. [Wesley] asked his sister, [Cindy], if she would babysit his son, [Chris], for the night.
[{('Lena', 'sister', 'Cindy'): [('Lena', 'son', 'Chris'), ('Chris', 'aunt', 'Cindy')]}, {('Chris', 'aunt', 'Cindy'): [('Chris', 'father', 'Wesley'), ('Wesley', 'sister', 'Cindy')]}]
['son', 'father', 'sister']