[Dorothy] took her son, [James], to the movie theater for his birthday. [Robert] is playing with his daughter [Elsie] in the yard. After a while, [Elsie]'s brother [John] joins them. [James] went to stay with his uncle [Robert] last weekend and had a great time.
('Dorothy', 'John')
[Dorothy] took her son, [James], to the movie theater for his birthday. [James] went to stay with his uncle [Robert] last weekend and had a great time. [Robert] is playing with his daughter [Elsie] in the yard. After a while, [Elsie]'s brother [John] joins them.
[{('Dorothy', 'nephew', 'John'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'son', 'John')]}, {('Robert', 'son', 'John'): [('Robert', 'daughter', 'Elsie'), ('Elsie', 'brother', 'John')]}, {('Dorothy', 'brother', 'Robert'): [('Dorothy', 'son', 'James'), ('James', 'uncle', 'Robert')]}]
['son', 'uncle', 'daughter', 'brother']