story: [Jason] used to threaten his own children with a wooden spoon as punishment. His daughter's son [Donald] could not imagine such a thing. [Jennifer] was playing in the sandbox with her brother [Donald].
query: ('Jennifer', 'Jason')
clean_story: [Jennifer] was playing in the sandbox with her brother [Donald]. [Jason] used to threaten his own children with a wooden spoon as punishment. His daughter's son [Donald] could not imagine such a thing.
proof_state: [{('Jennifer', 'grandfather', 'Jason'): [('Jennifer', 'brother', 'Donald'), ('Donald', 'grandfather', 'Jason')]}]