[Dale] and his sister [Amy] went to the movies to watch the newest superhero flick. [Clarence] was proud of his son, [Dale].
('Clarence', 'Amy')
[Clarence] was proud of his son, [Dale]. [Dale] and his sister [Amy] went to the movies to watch the newest superhero flick.
[{('Clarence', 'daughter', 'Amy'): [('Clarence', 'son', 'Dale'), ('Dale', 'sister', 'Amy')]}]
['son', 'sister']