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_1 or ~q. ~q. q or ~p_1.
~p_1 can be inferred via the disjunctive syllogism rule. q -> p_1 can be inferred via the rewriting rule. p_1 -> q can be inferred via the rewriting rule.