[Lena] moved in with her son [Charles] and his wife, [Tina]. [Charles]'s brother, [Chris] already lives with them.
('Tina', 'Lena')
[Lena] moved in with her son [Charles] and his wife, [Tina]. [Charles]'s brother, [Chris] already lives with them.
[{('Tina', 'mother-in-law', 'Lena'): [('Tina', 'husband', 'Charles'), ('Charles', 'mother', 'Lena')]}, {('Charles', 'mother', 'Lena'): [('Charles', 'brother', 'Chris'), ('Chris', 'mother', 'Lena')]}]
['husband', 'brother', 'mother']