What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: S_1(z) -> R(z). q_2 and w_2. forall z: Q_3(z) or S_1(z). forall z: Q_3(z) -> R(z). forall z: R(z) -> Q(z).
q_2. w_2. forall z: S_1(z) -> Q(z). forall z: Q_3(z) -> Q(z). forall z: R(z).