[Timmy] asked his father, [Ernest] to help him build a birdhouse. [Timmy] and his sister [Geraldine] walked to school together every day, since they only lived two blocks away from the school.
('Ernest', 'Geraldine')
[Timmy] asked his father, [Ernest] to help him build a birdhouse. [Timmy] and his sister [Geraldine] walked to school together every day, since they only lived two blocks away from the school.
[{('Ernest', 'daughter', 'Geraldine'): [('Ernest', 'son', 'Timmy'), ('Timmy', 'sister', 'Geraldine')]}]