[Ashley] made cookies with her daughter [Nancy]. [Nancy]'s son [Robert] ate all of the cookies.
('Ashley', 'Robert')
[Ashley] made cookies with her daughter [Nancy]. [Nancy]'s son [Robert] ate all of the cookies.
[{('Ashley', 'grandson', 'Robert'): [('Ashley', 'daughter', 'Nancy'), ('Nancy', 'son', 'Robert')]}]
['daughter', 'son']