story: [April] has to get a birthday present for her husband, [William] and for her son, [Eldon]. [Eldon] is staying with his grandmother, [Nettie] for the weekend. [Eldon] played chess with his brother [Kevin]. [April] and her son [Kevin] went out to lunch together yesterday.
clean_story: [April] has to get a birthday present for her husband, [William] and for her son, [Eldon]. [Eldon] is staying with his grandmother, [Nettie] for the weekend.
proof_state: [{('William', 'mother-in-law', 'Nettie'): [('William', 'wife', 'April'), ('April', 'mother', 'Nettie')]}, {('April', 'mother', 'Nettie'): [('April', 'son', 'Eldon'), ('Eldon', 'grandmother', 'Nettie')]}]