What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall z: R_4(z) or W_4(z). forall z: R_4(z) -> Q(z). forall z: Q(z) or ~W_4(z). forall z: Q(z) <-> T_4(z). forall z: Q_2(z) -> T_4(z).
forall z: W_4(z) -> Q(z). forall z: Q(z) -> T_4(z). forall z: T_4(z) -> Q(z).