[Kevin]'s mom, [Nancy], took him and her daughter, [Lorraine], out for lunch,
('Kevin', 'Lorraine')
[Kevin]'s mom, [Nancy], took him and her daughter, [Lorraine], out for lunch,
[{('Kevin', 'sister', 'Lorraine'): [('Kevin', 'mother', 'Nancy'), ('Nancy', 'daughter', 'Lorraine')]}]
['mother', 'daughter']