[Clarence] watched his daughter [Nancy] playing basketball. [Nancy] threw the ball to her brother [George] who made the basket.
('Clarence', 'George')
[Clarence] watched his daughter [Nancy] playing basketball. [Nancy] threw the ball to her brother [George] who made the basket.
[{('Clarence', 'son', 'George'): [('Clarence', 'daughter', 'Nancy'), ('Nancy', 'brother', 'George')]}]
['daughter', 'brother']