[Linda] went shopping at the mall with her mother [Nancy] [Nancy]'s biggest accomplishment is raising her son [Robert].
('Linda', 'Robert')
[Linda] went shopping at the mall with her mother [Nancy] [Nancy]'s biggest accomplishment is raising her son [Robert].
[{('Linda', 'brother', 'Robert'): [('Linda', 'mother', 'Nancy'), ('Nancy', 'son', 'Robert')]}]
['mother', 'son']