What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is overcast if and only if Patricia is cooking. It is not overcast. It is cloudy if and only if it is sunny. Patricia is cooking if and only if it is cloudy.
If it is overcast, then Patricia is cooking. If it is cloudy, then it is sunny. If Patricia cooks, then it is cloudy. If Patricia cooks, then it is overcast. If it is sunny, then it is cloudy. If it is cloudy, then Patricia is cooking. Patricia is not cooking.