[Robert] and his son [Allan] went to the store to by bread. [Beverly] kept picking on her sister [Tracy]. [Tracy] was so upset, she asked her brother [Robert] for some help. [Beverly] and her sister [Dorothy] played golf together. [Beverly] won easily.
('Dorothy', 'Allan')
[Beverly] and her sister [Dorothy] played golf together. [Beverly] won easily. [Beverly] kept picking on her sister [Tracy]. [Tracy] was so upset, she asked her brother [Robert] for some help. [Robert] and his son [Allan] went to the store to by bread.
[{('Dorothy', 'nephew', 'Allan'): [('Dorothy', 'brother', 'Robert'), ('Robert', 'son', 'Allan')]}, {('Dorothy', 'brother', 'Robert'): [('Dorothy', 'sister', 'Tracy'), ('Tracy', 'brother', 'Robert')]}, {('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'sister', 'Beverly'), ('Beverly', 'sister', 'Tracy')]}]
['sister', 'sister', 'brother', 'son']