What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? It is raining if and only if it is late. It is cloudy. It is not raining. If Michael works, then it is late.
It is cloudy and it is not raining. It is not raining and it is cloudy. If it rains, then it is late. If it is late, then it is raining. It is not late.