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: James is a police officer or it is not cloudy. James is a police officer if and only if it is cloudy.
If it is cloudy, then James is a police officer can be inferred via the rewriting rule. If James were a police officer, then it is cloudy can be inferred via the biconditional elimination rule. If it is cloudy, then James is a police officer can be inferred via the biconditional elimination rule.