[Tony] ca n't stand his unfriendly aunt [Nancy]. [Dale] was happy that his son [Tony] was doing well in college.
('Dale', 'Nancy')
[Dale] was happy that his son [Tony] was doing well in college. [Tony] ca n't stand his unfriendly aunt [Nancy].
[{('Dale', 'sister', 'Nancy'): [('Dale', 'son', 'Tony'), ('Tony', 'aunt', 'Nancy')]}]
['son', 'aunt']