What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_3: W(x_3) -> Q_3(x_3). forall x_3: Q_3(x_3) -> W(x_3).
forall x_3: W(x_3) <-> Q_3(x_3). forall x_3: Q_3(x_3) <-> W(x_3).