[Mary] made a cake for her granddaughter [Regina]. [Regina]'s brother [Timmy] ate cookies instead.
('Timmy', 'Mary')
[Mary] made a cake for her granddaughter [Regina]. [Regina]'s brother [Timmy] ate cookies instead.
[{('Timmy', 'grandmother', 'Mary'): [('Timmy', 'sister', 'Regina'), ('Regina', 'grandmother', 'Mary')]}]