What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_17, if x_17 were a nurse, then x_17 is a lawyer. If it snows, then Elisabeth is a nurse. Elisabeth is not a lawyer. If Elisabeth were a lawyer, then it is sunny. If it is sunny, then it is snowing.
If Elisabeth were a lawyer, then it is snowing. If it is sunny, then Elisabeth is a nurse.