[Jacob] made his son [Carl] mow the lawn. [Carl]'s sister [Alberta] tanned in the yard instead.
('Alberta', 'Jacob')
[Jacob] made his son [Carl] mow the lawn. [Carl]'s sister [Alberta] tanned in the yard instead.
[{('Alberta', 'father', 'Jacob'): [('Alberta', 'brother', 'Carl'), ('Carl', 'father', 'Jacob')]}]