[George] invited his daughter [Ann] to go shopping. [Ann]'s grandmother [Ashley] stayed at home sick.
('George', 'Ashley')
[George] invited his daughter [Ann] to go shopping. [Ann]'s grandmother [Ashley] stayed at home sick.
[{('George', 'mother', 'Ashley'): [('George', 'daughter', 'Ann'), ('Ann', 'grandmother', 'Ashley')]}]
['daughter', 'grandmother']