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_10: U_4(x_10) -> Q_10(x_10). forall x_10: Q_10(x_10) -> R_10(x_10). forall x_10: P_5(x_10) or U_4(x_10). exists x_10: ~P_5(x_10).
forall x_10: U_4(x_10) -> R_10(x_10) can be inferred via the universal transitivity rule. exists x_10: U_4(x_10) can be inferred via the existential disjunctive syllogism rule.