[Dennis] went to his grandmother [Ashley]'s house for the summer. He had a wonderful time there. [Dennis] loved his mother, [Amy].
('Amy', 'Ashley')
[Dennis] loved his mother, [Amy]. [Dennis] went to his grandmother [Ashley]'s house for the summer. He had a wonderful time there.
[{('Amy', 'mother', 'Ashley'): [('Amy', 'son', 'Dennis'), ('Dennis', 'grandmother', 'Ashley')]}]
['son', 'grandmother']