[George] liked playing with his brother [Nicholas] more than anyone else. This made [Theresa] jealous of her brother [Nicholas].
('Theresa', 'George')
[George] liked playing with his brother [Nicholas] more than anyone else. This made [Theresa] jealous of her brother [Nicholas].
[{('Theresa', 'brother', 'George'): [('Theresa', 'brother', 'Nicholas'), ('Nicholas', 'brother', 'George')]}]
['brother', 'brother']