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_9: ~Q_9(x_9) or R_5(x_9). forall x_9: ~P_9(x_9). forall x_9: P_9(x_9) or Q_9(x_9). ~Q_6(a).
forall x_9: Q_9(x_9) can be inferred via the universal disjunctive syllogism rule.