What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is not overcast. If Elisabeth were excited, then it is cold. If it is cold, then it is overcast. If it is overcast, then Elisabeth is excited.
It is not cold. If Elisabeth were excited, then it is overcast. If it is cold, then Elisabeth is excited. If it is overcast, then it is cold.