[Jacob] did n't get along very well with his sister [Linda] for some reason. [Nancy] and her daughter [Linda] were on vaction.
('Jacob', 'Nancy')
[Jacob] did n't get along very well with his sister [Linda] for some reason. [Nancy] and her daughter [Linda] were on vaction.
[{('Jacob', 'mother', 'Nancy'): [('Jacob', 'sister', 'Linda'), ('Linda', 'mother', 'Nancy')]}]
['sister', 'mother']