What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists z: W(z) <-> T(z). forall z: T(z) and S_3(z).
forall z: T(z). forall z: S_3(z). exists z: W(z) -> T(z). exists z: T(z) -> W(z).