What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists z: R(z) -> W_1(z). forall z: R(z) <-> Q_2(z). forall z: W_1(z) -> T(z). forall z: ~T(z).
forall z: ~W_1(z). exists z: R(z) -> T(z). forall z: R(z) -> Q_2(z). forall z: Q_2(z) -> R(z).