story: [Sandra] went to the park with her sisters [Marian] and [Valerie]. [Valerie]'s brother [Michael] did n't want to go though.
query: ('Michael', 'Marian')
clean_story: [Sandra] went to the park with her sisters [Marian] and [Valerie]. [Valerie]'s brother [Michael] did n't want to go though.
proof_state: [{('Michael', 'sister', 'Marian'): [('Michael', 'sister', 'Sandra'), ('Sandra', 'sister', 'Marian')]}, {('Michael', 'sister', 'Sandra'): [('Michael', 'sister', 'Valerie'), ('Valerie', 'sister', 'Sandra')]}]