What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: W_4(z). exists z: T_3(z) -> W_4(z). forall z: W_4(z) -> T_3(z).
forall z: T_3(z). exists z: T_3(z) <-> W_4(z). exists z: W_4(z) <-> T_3(z).