My dear Evelyn, cried Mrs. Cavendish, "this can't be true!" Miss Howard nodded grimly. 
Mrs. Cavendish knew that the girl couldn't possibly have done it. 
mnli hypothesis: Mrs. Cavendish knew that the girl couldn't possibly have done it.  premise: My dear Evelyn, cried Mrs. Cavendish, "this can't be true!" Miss Howard nodded grimly. 