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_1 and q_5. ~u. p_11 -> u.
~p_11 can be inferred via the modus tollens rule. q_1 can be inferred via the simplification rule. q_5 can be inferred via the simplification rule.