story: [Alma] took her son [Chad] and daughter [Annette] to the grocery store during her day off.
query: ('Annette', 'Chad')
clean_story: [Alma] took her son [Chad] and daughter [Annette] to the grocery store during her day off.
proof_state: [{('Annette', 'brother', 'Chad'): [('Annette', 'mother', 'Alma'), ('Alma', 'son', 'Chad')]}]