[George] took his daughter [April] to see her grandfather [Clarence] after school yesterday.
('George', 'Clarence')
[George] took his daughter [April] to see her grandfather [Clarence] after school yesterday.
[{('George', 'father', 'Clarence'): [('George', 'daughter', 'April'), ('April', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']