[April] gave her brother [John] a new sweater for Christmas. [Jerry] has a sister that picks on him. Her name is [April].
('Jerry', 'John')
[Jerry] has a sister that picks on him. Her name is [April]. [April] gave her brother [John] a new sweater for Christmas.
[{('Jerry', 'brother', 'John'): [('Jerry', 'sister', 'April'), ('April', 'brother', 'John')]}]
['sister', 'brother']