story: [Jennifer] wanted to prank her brother [Casey]. So she asked her sister [Diana] if she wanted to help her come up with a prank. [Casey] went to the baseball game with his brother [Scott]. [Sandra] took her granddaughter [Diana] on a long walk during the pretty spring day.
query: ('Casey', 'Sandra')
clean_story: [Jennifer] wanted to prank her brother [Casey]. So she asked her sister [Diana] if she wanted to help her come up with a prank. [Sandra] took her granddaughter [Diana] on a long walk during the pretty spring day.
proof_state: [{('Casey', 'grandmother', 'Sandra'): [('Casey', 'sister', 'Diana'), ('Diana', 'grandmother', 'Sandra')]}, {('Casey', 'sister', 'Diana'): [('Casey', 'sister', 'Jennifer'), ('Jennifer', 'sister', 'Diana')]}]