[Paul]'s mother, [Beverly], was worried about him. He had n't been eating. [Dorothy] went to the store with her sister [Marie]. Later that day, [Dorothy] had tea with her sister [Beverly]. [Tracy] was sewing a sweater for her sister [Marie].
('Paul', 'Tracy')
[Paul]'s mother, [Beverly], was worried about him. He had n't been eating. [Dorothy] went to the store with her sister [Marie]. Later that day, [Dorothy] had tea with her sister [Beverly]. [Tracy] was sewing a sweater for her sister [Marie].
[{('Paul', 'aunt', 'Tracy'): [('Paul', 'mother', 'Beverly'), ('Beverly', 'sister', 'Tracy')]}, {('Beverly', 'sister', 'Tracy'): [('Beverly', 'sister', 'Marie'), ('Marie', 'sister', 'Tracy')]}, {('Beverly', 'sister', 'Marie'): [('Beverly', 'sister', 'Dorothy'), ('Dorothy', 'sister', 'Marie')]}]
['mother', 'sister', 'sister', 'sister']