What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is windy. Karen is not a bartender. Jennifer is a nurse if and only if Karen is a bartender.
It is windy and Karen is not a bartender. Karen is not a bartender and it is windy. If Jennifer were a nurse, then Karen is a bartender. If Karen were a bartender, then Jennifer is a nurse. Jennifer is not a nurse.