[April] was sewing a sweater for her sister [Janet]. [Clarence] played cards with his son. His son's daughter [April] did not find it to be amusing.
('Janet', 'Clarence')
[April] was sewing a sweater for her sister [Janet]. [Clarence] played cards with his son. His son's daughter [April] did not find it to be amusing.
[{('Janet', 'grandfather', 'Clarence'): [('Janet', 'sister', 'April'), ('April', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']