What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: T(z) -> P_3(z). forall z: ~S_2(z). exists z: P_3(z) <-> S_2(z).
exists z: P_3(z) -> S_2(z). exists z: S_2(z) -> P_3(z). exists z: ~P_3(z).