What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall x_5: P_5(x_5) or ~Q_5(x_5). forall x_5: P_5(x_5) -> Q_5(x_5). ~Q_5(a_2).
forall x_5: Q_5(x_5) -> P_5(x_5) can be inferred via the universal rewriting rule.