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