[Robert] was the nephew of a man named [George]. [Nancy] baked a cake for her son [Robert].
('Nancy', 'George')
[Nancy] baked a cake for her son [Robert]. [Robert] was the nephew of a man named [George].
[{('Nancy', 'brother', 'George'): [('Nancy', 'son', 'Robert'), ('Robert', 'uncle', 'George')]}]
['son', 'uncle']