[Nancy] could n't wait for the surprise birthday party that she was throwing for her brother [Dale] next weekend. [Clarence] took his son [Dale] for boxing lessons. He felt the boy needed to toughen up.
('Clarence', 'Nancy')
[Clarence] took his son [Dale] for boxing lessons. He felt the boy needed to toughen up. [Nancy] could n't wait for the surprise birthday party that she was throwing for her brother [Dale] next weekend.
[{('Clarence', 'daughter', 'Nancy'): [('Clarence', 'son', 'Dale'), ('Dale', 'sister', 'Nancy')]}]
['son', 'sister']