[Kevin] did n't get along very well with his sister [Heidi] for some reason. [Wayne] went to the baseball game with his son [Kevin]
('Wayne', 'Heidi')
[Wayne] went to the baseball game with his son [Kevin] [Kevin] did n't get along very well with his sister [Heidi] for some reason.
[{('Wayne', 'daughter', 'Heidi'): [('Wayne', 'son', 'Kevin'), ('Kevin', 'sister', 'Heidi')]}]
['son', 'sister']