story: [Nettie] took her grandson [Eldon] to the park. [Eldon]'s brother [Kevin] was already there. [Kevin] invited his mother [April] and grandmother [Nettie] over for dinner. [William] wrote a poem for his wife [April].
clean_story: [William] wrote a poem for his wife [April]. [Kevin] invited his mother [April] and grandmother [Nettie] over for dinner.
proof_state: [{('William', 'mother-in-law', 'Nettie'): [('William', 'wife', 'April'), ('April', 'mother', 'Nettie')]}, {('April', 'mother', 'Nettie'): [('April', 'son', 'Kevin'), ('Kevin', 'grandmother', 'Nettie')]}]