[Nancy] asked her Daughter [Linda] to take the dogs for a walk. [Linda] asked her sister [Lorraine] to accompany her.
('Lorraine', 'Nancy')
[Nancy] asked her Daughter [Linda] to take the dogs for a walk. [Linda] asked her sister [Lorraine] to accompany her.
[{('Lorraine', 'mother', 'Nancy'): [('Lorraine', 'sister', 'Linda'), ('Linda', 'mother', 'Nancy')]}]
['sister', 'mother']