[Clarence] and his daughter [Nancy] went to the store. [Nancy]'s child, [Lorraine] was already there waiting for them.
('Lorraine', 'Clarence')
[Clarence] and his daughter [Nancy] went to the store. [Nancy]'s child, [Lorraine] was already there waiting for them.
[{('Lorraine', 'grandfather', 'Clarence'): [('Lorraine', 'mother', 'Nancy'), ('Nancy', 'father', 'Clarence')]}]
['mother', 'father']