story: [Stephen] was out with his son [Charles]. Later that day they went to see [Stephen]'s father, [Paul]. [Stephen] and his son [Jonathan] went to the cinema together. [Cecilia] and her son, [Charles], went to the park, and had a wonderful time. [Jonathan] asked his brother [Charles] if he would come help him fix his car next weekend.
clean_story: [Cecilia] and her son, [Charles], went to the park, and had a wonderful time. [Stephen] was out with his son [Charles]. Later that day they went to see [Stephen]'s father, [Paul].
proof_state: [{('Cecilia', 'father', 'Paul'): [('Cecilia', 'son', 'Charles'), ('Charles', 'grandfather', 'Paul')]}, {('Charles', 'grandfather', 'Paul'): [('Charles', 'father', 'Stephen'), ('Stephen', 'father', 'Paul')]}]