[Nancy] and her brother [Dale] went out shopping. [Nancy] left her son, [Heidi], with the babysitter.
('Heidi', 'Dale')
[Nancy] and her brother [Dale] went out shopping. [Nancy] left her son, [Heidi], with the babysitter.
[{('Heidi', 'uncle', 'Dale'): [('Heidi', 'mother', 'Nancy'), ('Nancy', 'brother', 'Dale')]}]
['mother', 'brother']