story: [Anna] was playing in the sandbox with her brother [Jeffrey]. [Jeffrey]'s grandfather, [Jason], took the boy to the store to buy some new shoes.
query: ('Anna', 'Jason')
clean_story: [Anna] was playing in the sandbox with her brother [Jeffrey]. [Jeffrey]'s grandfather, [Jason], took the boy to the store to buy some new shoes.
proof_state: [{('Anna', 'grandfather', 'Jason'): [('Anna', 'brother', 'Jeffrey'), ('Jeffrey', 'grandfather', 'Jason')]}]