story: [Cecilia] enjoyed a homemade dinner with her son [Charles] [Sherman] went to his brother [Charles]'s Birthday party [Stephen] took his son [Sherman] out for ice cream. [Stephen] was out with his son [Charles]. Later that day they went to see [Stephen]'s father, [Paul].
clean_story: [Cecilia] enjoyed a homemade dinner with her son [Charles] [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')]}]