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