[Amy] had dinner with her sister. Her sister's son [Travis] was also there. [Dale]'s son is [Travis]. [Travis] and his father always go fishing together on Sundays and have a great time together.
('Dale', 'Amy')
[Dale]'s son is [Travis]. [Travis] and his father always go fishing together on Sundays and have a great time together. [Amy] had dinner with her sister. Her sister's son [Travis] was also there.
[{('Dale', 'sister', 'Amy'): [('Dale', 'son', 'Travis'), ('Travis', 'aunt', 'Amy')]}]
['son', 'aunt']