[Ashley] bought a nice toy for her grandson [Glen]. This made [Glen]'s sister [Mary] very jealous.
('Mary', 'Ashley')
[Ashley] bought a nice toy for her grandson [Glen]. This made [Glen]'s sister [Mary] very jealous.
[{('Mary', 'grandmother', 'Ashley'): [('Mary', 'brother', 'Glen'), ('Glen', 'grandmother', 'Ashley')]}]
['brother', 'grandmother']