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) <-> W_3(z). forall z: ~W_3(z). exists z: W_3(z) -> T(z).
forall z: T(z) -> W_3(z). forall z: W_3(z) -> T(z). forall z: ~T(z).