[Chris] wanted to get a good gift for his sister, [Pamela] [Wesley] watched his son [Charles] play catch. [Charles] tossed the ball back and fourth with his brother [Chris].
('Wesley', 'Pamela')
[Wesley] watched his son [Charles] play catch. [Charles] tossed the ball back and fourth with his brother [Chris]. [Chris] wanted to get a good gift for his sister, [Pamela]
[{('Wesley', 'daughter', 'Pamela'): [('Wesley', 'son', 'Chris'), ('Chris', 'sister', 'Pamela')]}, {('Wesley', 'son', 'Chris'): [('Wesley', 'son', 'Charles'), ('Charles', 'brother', 'Chris')]}]
['son', 'brother', 'sister']