[Clarence] is watching his granddaughter [Mary] while her mom [Amy] is at work.
('Amy', 'Clarence')
[Clarence] is watching his granddaughter [Mary] while her mom [Amy] is at work.
[{('Amy', 'father', 'Clarence'): [('Amy', 'daughter', 'Mary'), ('Mary', 'grandfather', 'Clarence')]}]
['daughter', 'grandfather']