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: exists x_5: R_4(x_5) -> Q_5(x_5). forall x_5: P_2(x_5) or ~R_5(x_5). forall x_5: Q_5(x_5) -> R_5(x_5).
exists x_5: R_4(x_5) -> R_5(x_5) can be inferred via the existential transitivity rule. forall x_5: R_5(x_5) -> P_2(x_5) can be inferred via the universal rewriting rule.