What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: T_4(z) or Q_3(z). forall z: P_1(z) -> W(z). exists z: W(z) <-> T_4(z). forall z: Q_3(z) -> P_1(z).
forall z: Q_3(z) -> W(z). exists z: W(z) -> T_4(z). exists z: T_4(z) -> W(z).