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: u_1 -> q_11. r -> r_3. u_1 or p. r_3 or ~p. q_11 -> r.
u_1 -> r can be inferred via the transitivity rule. q_11 -> r_3 can be inferred via the transitivity rule. p -> r_3 can be inferred via the rewriting rule.