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 it is late, then Charles is sleeping. If Michael were a scientist, then William is making tea. Michael is a scientist or it is raining. If it rains, then it is late. If Charles sleeps, then William is making tea.
If it is late, then William is making tea can be inferred via the transitivity rule. If it rains, then Charles is sleeping can be inferred via the transitivity rule.