[Dennis] received a nice gift from his grandfather [Clarence]. [Dennis] was so proud he showed it to his mother [Amy].
('Amy', 'Clarence')
[Dennis] received a nice gift from his grandfather [Clarence]. [Dennis] was so proud he showed it to his mother [Amy].
[{('Amy', 'father', 'Clarence'): [('Amy', 'son', 'Dennis'), ('Dennis', 'grandfather', 'Clarence')]}]
['son', 'grandfather']