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: ~P_6(x_9). forall x_9: T_1(x_9) -> P(x_9). forall x_9: U(x_9) -> Q_9(x_9). forall x_9: Q_9(x_9) -> T_1(x_9). forall x_9: P_6(x_9) or U(x_9).
forall x_9: U(x_9) -> T_1(x_9) can be inferred via the universal transitivity rule. forall x_9: Q_9(x_9) -> P(x_9) can be inferred via the universal transitivity rule. forall x_9: U(x_9) can be inferred via the universal disjunctive syllogism rule.