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: ~p_8. p_8 or ~r. p_8 -> q_8. q_8 -> r.
p_8 -> r can be inferred via the transitivity rule. ~r can be inferred via the disjunctive syllogism rule. r -> p_8 can be inferred via the rewriting rule.