story: [Dorothy] was playing hide-and-seek with her sister [Alma]. [Dorothy] and her brother [Christopher] sat down together to clip coupons.
query: ('Christopher', 'Alma')
clean_story: [Dorothy] and her brother [Christopher] sat down together to clip coupons. [Dorothy] was playing hide-and-seek with her sister [Alma].
proof_state: [{('Christopher', 'sister', 'Alma'): [('Christopher', 'sister', 'Dorothy'), ('Dorothy', 'sister', 'Alma')]}]