[Ann] went with her father [George] and her grandfather [Clarence] to the park to fly some kites.
('George', 'Clarence')
[Ann] went with her father [George] and her grandfather [Clarence] to the park to fly some kites.
[{('George', 'father', 'Clarence'): [('George', 'daughter', 'Ann'), ('Ann', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']