story: [Melissa] liked to play hide and seek with her son [Mack]. [Melissa] took her younger sister [Nancy] to the carnival last weekend. [Adam] is the loving father of his wonderful child [Nancy]. [Nancy] loves [Adam].
query: ('Nancy', 'Mack')
clean_story: [Melissa] took her younger sister [Nancy] to the carnival last weekend. [Melissa] liked to play hide and seek with her son [Mack].
proof_state: [{('Nancy', 'nephew', 'Mack'): [('Nancy', 'sister', 'Melissa'), ('Melissa', 'son', 'Mack')]}]