[Dale] helped his daughter [Charlotte] practice for the game tomorrow. He invited his father [Clarence] to go watch the game with him.
('Charlotte', 'Clarence')
[Dale] helped his daughter [Charlotte] practice for the game tomorrow. He invited his father [Clarence] to go watch the game with him.
[{('Charlotte', 'grandfather', 'Clarence'): [('Charlotte', 'father', 'Dale'), ('Dale', 'father', 'Clarence')]}]
['father', 'father']