story: [Chad]'s sister, [Annette], bought movie tickets at a discount rate. [Jennifer] was sewing a sweater for her sister [Annette].
query: ('Chad', 'Jennifer')
clean_story: [Chad]'s sister, [Annette], bought movie tickets at a discount rate. [Jennifer] was sewing a sweater for her sister [Annette].
proof_state: [{('Chad', 'sister', 'Jennifer'): [('Chad', 'sister', 'Annette'), ('Annette', 'sister', 'Jennifer')]}]