[Wayne] took his daughter [Heidi] to ballet class. [Kevin] did n't get along very well with his sister [Heidi] for some reason.
('Kevin', 'Wayne')
[Kevin] did n't get along very well with his sister [Heidi] for some reason. [Wayne] took his daughter [Heidi] to ballet class.
[{('Kevin', 'father', 'Wayne'): [('Kevin', 'sister', 'Heidi'), ('Heidi', 'father', 'Wayne')]}]
['sister', 'father']