[Dale] and his sister [Amy] walked to school together every day, since they only lived two blocks away from the school. [James] went to the park with his father, [Dale].
('James', 'Amy')
[James] went to the park with his father, [Dale]. [Dale] and his sister [Amy] walked to school together every day, since they only lived two blocks away from the school.
[{('James', 'aunt', 'Amy'): [('James', 'father', 'Dale'), ('Dale', 'sister', 'Amy')]}]
['father', 'sister']