[Wesley] and his wife [Lena] made promise to help their son [Charles]. [Charles]'s brother [Chris] is willing to help to.
('Lena', 'Chris')
[Wesley] and his wife [Lena] made promise to help their son [Charles]. [Charles]'s brother [Chris] is willing to help to.
[{('Lena', 'son', 'Chris'): [('Lena', 'son', 'Charles'), ('Charles', 'brother', 'Chris')]}, {('Charles', 'brother', 'Chris'): [('Charles', 'father', 'Wesley'), ('Wesley', 'son', 'Chris')]}]
['son', 'father', 'son']