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) or ~Q(z). forall z: P(z) or U(z). exists z: ~P(z) or Q(z). forall z: U(z) -> T(z).
exists z: U(z) or Q(z). forall z: Q(z) -> T(z).