What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: U(z) -> Q(z). exists z: ~Q(z). forall z: Q_3(z) -> U(z). forall z: T(z) -> Q_3(z).
exists z: ~U(z). forall z: Q_3(z) -> Q(z). forall z: T(z) -> U(z).