[Mary] played mini golf with her grandfather, [Clarence], and her mother, [Amy].
('Amy', 'Clarence')
[Mary] played mini golf with her grandfather, [Clarence], and her mother, [Amy].
[{('Amy', 'father', 'Clarence'): [('Amy', 'daughter', 'Mary'), ('Mary', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']