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: It is late or it is not sunny. If it rains, then it is sunny. If it is late, then it is raining.
If it is late, then it is sunny can be inferred via the transitivity rule. If it is sunny, then it is late can be inferred via the rewriting rule.