[Nicholas] likes to go fishing with his sister. Her name is [Theresa]. [Clarence] is taking his son [Nicholas] out for coffee.
('Clarence', 'Theresa')
[Clarence] is taking his son [Nicholas] out for coffee. [Nicholas] likes to go fishing with his sister. Her name is [Theresa].
[{('Clarence', 'daughter', 'Theresa'): [('Clarence', 'son', 'Nicholas'), ('Nicholas', 'sister', 'Theresa')]}]
['son', 'sister']