[Jacob] and his sister [Heidi] love to play video games. [Wayne] is taking his son [Jacob] out for coffee.
('Wayne', 'Heidi')
[Wayne] is taking his son [Jacob] out for coffee. [Jacob] and his sister [Heidi] love to play video games.
[{('Wayne', 'daughter', 'Heidi'): [('Wayne', 'son', 'Jacob'), ('Jacob', 'sister', 'Heidi')]}]
['son', 'sister']