[Tracy] asked her son [Aaron] to help her fix her television. [Beverly] and her sister [Dorothy] are the only children in their family. [Aaron] ca n't stand his unfriendly aunt [Marie]. [Beverly] was talking about food with her sister [Tracy].
('Dorothy', 'Marie')
[Beverly] and her sister [Dorothy] are the only children in their family. [Beverly] was talking about food with her sister [Tracy]. [Tracy] asked her son [Aaron] to help her fix her television. [Aaron] ca n't stand his unfriendly aunt [Marie].
[{('Dorothy', 'sister', 'Marie'): [('Dorothy', 'sister', 'Tracy'), ('Tracy', 'sister', 'Marie')]}, {('Tracy', 'sister', 'Marie'): [('Tracy', 'son', 'Aaron'), ('Aaron', 'aunt', 'Marie')]}, {('Dorothy', 'sister', 'Tracy'): [('Dorothy', 'sister', 'Beverly'), ('Beverly', 'sister', 'Tracy')]}]
['sister', 'sister', 'son', 'aunt']