[Tony] who is [Theresa]'s son made the basketball team. [Ashley] who is the grandmother of [Tony] will attend the game.
('Theresa', 'Ashley')
[Tony] who is [Theresa]'s son made the basketball team. [Ashley] who is the grandmother of [Tony] will attend the game.
[{('Theresa', 'mother', 'Ashley'): [('Theresa', 'son', 'Tony'), ('Tony', 'grandmother', 'Ashley')]}]
['son', 'grandmother']