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