[Clarence] and his wife [Ashley] made sandwiches. [Ashley]'s granddaughter [Mary] ate two.
('Clarence', 'Mary')
[Clarence] and his wife [Ashley] made sandwiches. [Ashley]'s granddaughter [Mary] ate two.
[{('Clarence', 'granddaughter', 'Mary'): [('Clarence', 'wife', 'Ashley'), ('Ashley', 'granddaughter', 'Mary')]}]
['wife', 'granddaughter']