[David] went shopping with her daughter [Gloria]. [Gloria]'s sister [Marie] was too busy to join them. [Lena] is a woman with a sister named [David].
('Marie', 'Lena')
[David] went shopping with her daughter [Gloria]. [Gloria]'s sister [Marie] was too busy to join them. [Lena] is a woman with a sister named [David].
[{('Marie', 'aunt', 'Lena'): [('Marie', 'mother', 'David'), ('David', 'sister', 'Lena')]}, {('Marie', 'mother', 'David'): [('Marie', 'sister', 'Gloria'), ('Gloria', 'mother', 'David')]}]
['sister', 'mother', 'sister']