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_7: ~P_7(x_7) or S(x_7). forall x_7: P_7(x_7) or Q_7(x_7). ~S(a_3). forall x_7: ~Q_7(x_7) or R_5(x_7).
forall x_7: Q_7(x_7) or S(x_7) can be inferred via the universal resolution rule.