story: [Michelle] was playing in the sandbox with her brother [Alan]. [Sandra] took her younger sister [Marian] to the carnival last weekend. [Marian] and her brother [Alan] are both adopted from the same family.
query: ('Michelle', 'Sandra')
clean_story: [Michelle] was playing in the sandbox with her brother [Alan]. [Marian] and her brother [Alan] are both adopted from the same family. [Sandra] took her younger sister [Marian] to the carnival last weekend.
proof_state: [{('Michelle', 'sister', 'Sandra'): [('Michelle', 'sister', 'Marian'), ('Marian', 'sister', 'Sandra')]}, {('Michelle', 'sister', 'Marian'): [('Michelle', 'brother', 'Alan'), ('Alan', 'sister', 'Marian')]}]