[Hugh] and his sister [Lynn] were twins. Still, they did n't look very much alike. [Cindy] told her daughter [Carrie] to wash up. Dinner was ready. [Lynn] is looking for a good gift for her sister [Cindy].
('Hugh', 'Carrie')
[Hugh] and his sister [Lynn] were twins. Still, they did n't look very much alike. [Lynn] is looking for a good gift for her sister [Cindy]. [Cindy] told her daughter [Carrie] to wash up. Dinner was ready.
[{('Hugh', 'niece', 'Carrie'): [('Hugh', 'sister', 'Cindy'), ('Cindy', 'daughter', 'Carrie')]}, {('Hugh', 'sister', 'Cindy'): [('Hugh', 'sister', 'Lynn'), ('Lynn', 'sister', 'Cindy')]}]
['sister', 'sister', 'daughter']