story: Last night, [Melissa] went out with her sister [Nancy], accompanied by [Melissa]'s daughter [Stacy]. [James] and her sister [Nancy] decided to take a trip to Mexico together.
query: ('Nancy', 'Stacy')
clean_story: Last night, [Melissa] went out with her sister [Nancy], accompanied by [Melissa]'s daughter [Stacy].
proof_state: [{('Nancy', 'niece', 'Stacy'): [('Nancy', 'sister', 'Melissa'), ('Melissa', 'daughter', 'Stacy')]}]