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_2(x_7) or U(x_7). forall x_7: P_7(x_7) and Q_7(x_7). forall x_7: ~P_2(x_7).
forall x_7: U(x_7) can be inferred via the universal disjunctive syllogism rule. forall x_7: P_7(x_7) can be inferred via the universal simplification rule. forall x_7: Q_7(x_7) can be inferred via the universal simplification rule.