What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Charles is not a lawyer. If it rains, then Charles is a lawyer. If Charles were a lawyer, then it is windy. If it is windy, then it is raining.
It is not raining. If it rains, then it is windy. If Charles were a lawyer, then it is raining. If it is windy, then Charles is a lawyer.