[Nancy] asked her son [Kevin] how school was. [Kevin] did n't want to talk but instead went to play with his sister [Louise].
('Louise', 'Nancy')
[Nancy] asked her son [Kevin] how school was. [Kevin] did n't want to talk but instead went to play with his sister [Louise].
[{('Louise', 'mother', 'Nancy'): [('Louise', 'brother', 'Kevin'), ('Kevin', 'mother', 'Nancy')]}]
['brother', 'mother']