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