story: [Michael] bought his sister [Valerie] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Sandra] and her nephew [Emmanuel] went to the store to buy some new tea. [Valerie] and her son [Emmanuel] went to the zoo and then out to dinner yesterday.
query: ('Michael', 'Sandra')
clean_story: [Michael] bought his sister [Valerie] a video game for her birthday. She said it was her favorite game and gave him a big hug. [Valerie] and her son [Emmanuel] went to the zoo and then out to dinner yesterday. [Sandra] and her nephew [Emmanuel] went to the store to buy some new tea.
proof_state: [{('Michael', 'sister', 'Sandra'): [('Michael', 'sister', 'Valerie'), ('Valerie', 'sister', 'Sandra')]}, {('Valerie', 'sister', 'Sandra'): [('Valerie', 'son', 'Emmanuel'), ('Emmanuel', 'aunt', 'Sandra')]}]