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: If Michael cooks, then it is not snowing. Richard is not sleeping or it is snowing. For all x_17, x_17 is not bored. Richard is sleeping or David is bored.
David is bored or it is snowing can be inferred via the resolution rule. If David drives a car, then Richard is sleeping can be inferred via the rewriting rule.