[Nancy] and her son [Robert], went to the nursing home to visit [Nancy]'s mother, [Ashley].
('Robert', 'Ashley')
[Nancy] and her son [Robert], went to the nursing home to visit [Nancy]'s mother, [Ashley].
[{('Robert', 'grandmother', 'Ashley'): [('Robert', 'mother', 'Nancy'), ('Nancy', 'mother', 'Ashley')]}]
['mother', 'mother']