[Jerry]'s mother [Lillian] baked brownies for dessert after they had dinner. [John] is happy that his brother, [Jerry], is becoming successful.
('John', 'Lillian')
[John] is happy that his brother, [Jerry], is becoming successful. [Jerry]'s mother [Lillian] baked brownies for dessert after they had dinner.
[{('John', 'mother', 'Lillian'): [('John', 'brother', 'Jerry'), ('Jerry', 'mother', 'Lillian')]}]
['brother', 'mother']