[Ashley] took her granddaughter [Lorraine] out for ice cream. [Lorraine]'s sister [Heidi] went out with her friends instead.
('Ashley', 'Heidi')
[Ashley] took her granddaughter [Lorraine] out for ice cream. [Lorraine]'s sister [Heidi] went out with her friends instead.
[{('Ashley', 'granddaughter', 'Heidi'): [('Ashley', 'granddaughter', 'Lorraine'), ('Lorraine', 'sister', 'Heidi')]}]
['granddaughter', 'sister']