[Jerry] is a sibling of [John]. [John] has a sister that picks on him. Her name is [April].
('Jerry', 'April')
[Jerry] is a sibling of [John]. [John] has a sister that picks on him. Her name is [April].
[{('Jerry', 'sister', 'April'): [('Jerry', 'brother', 'John'), ('John', 'sister', 'April')]}]
['brother', 'sister']