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: Michael is playing a game or Robert is not sleeping. If it is cold, then Robert is sleeping. If Michael plays a game, then it is cold.
If Michael plays a game, then Robert is sleeping can be inferred via the transitivity rule. If Robert sleeps, then Michael is playing a game can be inferred via the rewriting rule.