What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: W(y) -> S(y). forall y: P_3(y) or ~S(y). forall y: P_3(y) -> W(y).
forall y: P_3(y) -> S(y). forall y: S(y) -> P_3(y).