[Travis] has a sister who has a son. The son is named [Nicholas]. [Travis] asked his son, [Dale], to help paint his house.
('Dale', 'Nicholas')
[Travis] asked his son, [Dale], to help paint his house. [Travis] has a sister who has a son. The son is named [Nicholas].
[{('Dale', 'brother', 'Nicholas'): [('Dale', 'son', 'Travis'), ('Travis', 'uncle', 'Nicholas')]}]
['son', 'uncle']