[Robert] is a factory worker. He has a wonderful sister by the name of [Louise]. [Clarence] played cards with his son. His son's daughter [Louise] did not find it to be amusing.
('Robert', 'Clarence')
[Robert] is a factory worker. He has a wonderful sister by the name of [Louise]. [Clarence] played cards with his son. His son's daughter [Louise] did not find it to be amusing.
[{('Robert', 'grandfather', 'Clarence'): [('Robert', 'sister', 'Louise'), ('Louise', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']