story: [James] and his son [Clarence] went to the cinema together. [James]'s mother, [Patricia], took him shopping for a new television [Nancy] and her husband [Todd] went on a cruise. They had a wonderful time. [Elizabeth] always goes to the park with her son [Clarence] on Saturdays.
clean_story: [Elizabeth] always goes to the park with her son [Clarence] on Saturdays. [James] and his son [Clarence] went to the cinema together. [James]'s mother, [Patricia], took him shopping for a new television
proof_state: [{('Elizabeth', 'mother', 'Patricia'): [('Elizabeth', 'son', 'Clarence'), ('Clarence', 'grandmother', 'Patricia')]}, {('Clarence', 'grandmother', 'Patricia'): [('Clarence', 'father', 'James'), ('James', 'mother', 'Patricia')]}]