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: ~q. s -> r_3. r_3 -> q. s or ~q.
~r_3 can be inferred via the modus tollens rule. s -> q can be inferred via the transitivity rule. q -> s can be inferred via the rewriting rule.