story: [Nancy] was talking about food with her sister [Minnie]. [Nancy]'s mother [Michelle] went to pick up [Maria]. [Maria]'s mother, [Nancy], could n't be there to pick up [Maria].
query: ('Maria', 'Michelle')
clean_story: [Nancy]'s mother [Michelle] went to pick up [Maria]. [Maria]'s mother, [Nancy], could n't be there to pick up [Maria].
proof_state: [{('Maria', 'grandmother', 'Michelle'): [('Maria', 'mother', 'Nancy'), ('Nancy', 'mother', 'Michelle')]}]