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_8: ~P_8(x_8). forall x_8: P_3(x_8) and Q_3(x_8). exists x_8: P_8(x_8) or Q_8(x_8).
exists x_8: Q_8(x_8) can be inferred via the existential disjunctive syllogism rule. forall x_8: P_3(x_8) can be inferred via the universal simplification rule. forall x_8: Q_3(x_8) can be inferred via the universal simplification rule.