What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is late if and only if it is raining. It is late if and only if Elisabeth is an electrician. It is not raining.
If it is late, then it is raining. If it is late, then Elisabeth is an electrician. If it rains, then it is late. If Elisabeth were an electrician, then it is late. It is not late.