[Theresa] had dinner with her sister. Her sister's son [Robert] was also there. [Nancy] and her son, [Robert], decorated mugs at the craft fair together.
('Nancy', 'Theresa')
[Nancy] and her son, [Robert], decorated mugs at the craft fair together. [Theresa] had dinner with her sister. Her sister's son [Robert] was also there.
[{('Nancy', 'sister', 'Theresa'): [('Nancy', 'son', 'Robert'), ('Robert', 'aunt', 'Theresa')]}]
['son', 'aunt']