[Louise] and his sister, [Lorraine], were playing out on the lawn. [Lorraine]'s grandfather, [Clarence], yelled for them to get inside.
('Louise', 'Clarence')
[Louise] and his sister, [Lorraine], were playing out on the lawn. [Lorraine]'s grandfather, [Clarence], yelled for them to get inside.
[{('Louise', 'grandfather', 'Clarence'): [('Louise', 'sister', 'Lorraine'), ('Lorraine', 'grandfather', 'Clarence')]}]
['sister', 'grandfather']