[Douglas]'s sister [Janet] did not want to go shopping but her grandmother [Ashley] forced her to.
('Douglas', 'Ashley')
[Douglas]'s sister [Janet] did not want to go shopping but her grandmother [Ashley] forced her to.
[{('Douglas', 'grandmother', 'Ashley'): [('Douglas', 'sister', 'Janet'), ('Janet', 'grandmother', 'Ashley')]}]
['sister', 'grandmother']