What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: S_3(z) -> T(z). forall z: Q_2(z) -> S_3(z). exists z: Q(z) or S_3(z). forall z: Q(z) -> R(z). forall z: T(z) -> Q_2(z). forall z: T(z) -> R(z).
forall z: S_3(z) -> Q_2(z). forall z: S_3(z) -> R(z). forall z: Q_2(z) -> T(z). forall z: T(z) -> S_3(z).