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. ~q_10. u_1 or r. u_1 -> q_10.
~u_1 can be inferred via the modus tollens rule. p and ~q_10 can be inferred via the conjunction rule. ~q_10 and p can be inferred via the conjunction rule.