story: [Nancy] is taking a trip to see her sister [Melissa]. [Nancy] and her daughter [Sabrina] were on vaction. [Otto] and his sister [Nancy] went to brunch today at the new diner.
query: ('Sabrina', 'Melissa')
clean_story: [Nancy] and her daughter [Sabrina] were on vaction. [Nancy] is taking a trip to see her sister [Melissa].
proof_state: [{('Sabrina', 'aunt', 'Melissa'): [('Sabrina', 'mother', 'Nancy'), ('Nancy', 'sister', 'Melissa')]}]