[Dale] asked his sister, [Amy], if she would babysit his son, [Travis], for the night.
('Travis', 'Amy')
[Dale] asked his sister, [Amy], if she would babysit his son, [Travis], for the night.
[{('Travis', 'aunt', 'Amy'): [('Travis', 'father', 'Dale'), ('Dale', 'sister', 'Amy')]}]
['father', 'sister']