[Dorothy] made a pizza for her son [Jeffrey] and his brother [James]. [Robert] is a man with a niece named [Rebecca]. [Rebecca] and her mother [Dorothy] went dress shopping on Saturday.
('James', 'Robert')
[Dorothy] made a pizza for her son [Jeffrey] and his brother [James]. [Rebecca] and her mother [Dorothy] went dress shopping on Saturday. [Robert] is a man with a niece named [Rebecca].
[{('James', 'uncle', 'Robert'): [('James', 'mother', 'Dorothy'), ('Dorothy', 'brother', 'Robert')]}, {('Dorothy', 'brother', 'Robert'): [('Dorothy', 'daughter', 'Rebecca'), ('Rebecca', 'uncle', 'Robert')]}, {('James', 'mother', 'Dorothy'): [('James', 'brother', 'Jeffrey'), ('Jeffrey', 'mother', 'Dorothy')]}]
['brother', 'mother', 'daughter', 'uncle']