story: [Michael] and his sister [Sandra] walked to school together every day, since they only lived two blocks away from the school. [Sandra] went to the park with her sister [Michelle]. [Michelle] decided not to invite her brother, [Alan], though.
query: ('Michael', 'Alan')
clean_story: [Michael] and his sister [Sandra] walked to school together every day, since they only lived two blocks away from the school. [Sandra] went to the park with her sister [Michelle]. [Michelle] decided not to invite her brother, [Alan], though.
proof_state: [{('Michael', 'brother', 'Alan'): [('Michael', 'sister', 'Sandra'), ('Sandra', 'brother', 'Alan')]}, {('Sandra', 'brother', 'Alan'): [('Sandra', 'sister', 'Michelle'), ('Michelle', 'brother', 'Alan')]}]