[Nancy] learned that her daughter [Heidi] just got a new job. [Nancy]'s son [Kevin] also works for the same company.
('Kevin', 'Heidi')
[Nancy] learned that her daughter [Heidi] just got a new job. [Nancy]'s son [Kevin] also works for the same company.
[{('Kevin', 'sister', 'Heidi'): [('Kevin', 'mother', 'Nancy'), ('Nancy', 'daughter', 'Heidi')]}]
['mother', 'daughter']