[Nancy] went on a vacation with her brother [George]. [Kevin]'s mother [Nancy] secretly put money away for him to go on a trip next fall.
('Kevin', 'George')
[Kevin]'s mother [Nancy] secretly put money away for him to go on a trip next fall. [Nancy] went on a vacation with her brother [George].
[{('Kevin', 'uncle', 'George'): [('Kevin', 'mother', 'Nancy'), ('Nancy', 'brother', 'George')]}]
['mother', 'brother']