[Brent] and his sister [Ann] went to brunch today at the new diner. [Brent]'s grandmother, [Mary], was sick. [Brent] stayed by her side until she got better.
('Ann', 'Mary')
[Brent] and his sister [Ann] went to brunch today at the new diner. [Brent]'s grandmother, [Mary], was sick. [Brent] stayed by her side until she got better.
[{('Ann', 'grandmother', 'Mary'): [('Ann', 'brother', 'Brent'), ('Brent', 'grandmother', 'Mary')]}]