[Heidi] was sewing a sweater for her sister [Louise]. [Nancy] told her daughter [Louise] to wash up. Dinner was ready.
('Nancy', 'Heidi')
[Nancy] told her daughter [Louise] to wash up. Dinner was ready. [Heidi] was sewing a sweater for her sister [Louise].
[{('Nancy', 'daughter', 'Heidi'): [('Nancy', 'daughter', 'Louise'), ('Louise', 'sister', 'Heidi')]}]
['daughter', 'sister']