[Dale] had a nephew called [Robert] who had n't seen for a number of years. [Nancy]'s son, [Robert], went with her to the store to buy candy for Halloween.
('Nancy', 'Dale')
[Nancy]'s son, [Robert], went with her to the store to buy candy for Halloween. [Dale] had a nephew called [Robert] who had n't seen for a number of years.
[{('Nancy', 'brother', 'Dale'): [('Nancy', 'son', 'Robert'), ('Robert', 'uncle', 'Dale')]}]
['son', 'uncle']