[Dale] went to pick up his son [Nicolas] from the baseball practice. [George] was thrilled to take his nephew, [Nicolas], out to play for the day.
('Dale', 'George')
[Dale] went to pick up his son [Nicolas] from the baseball practice. [George] was thrilled to take his nephew, [Nicolas], out to play for the day.
[{('Dale', 'brother', 'George'): [('Dale', 'son', 'Nicolas'), ('Nicolas', 'uncle', 'George')]}]
['son', 'uncle']