What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is raining if and only if it is overcast. If it is windy, then it is overcast. It is raining if and only if it is windy.
If it rains, then it is overcast. If it rains, then it is windy. If it is overcast, then it is raining. If it is windy, then it is raining.