What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists z_4: Q_3(z_4) -> W_3(z_4). forall z_4: W_3(z_4) -> S(z_4). forall z_4: S(z_4) -> Q_3(z_4). forall z_4: Q_3(z_4).
exists z_4: W_3(z_4). forall z_4: W_3(z_4) -> Q_3(z_4). exists z_4: Q_3(z_4) -> S(z_4). exists z_4: S(z_4) -> W_3(z_4).