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: Robert is a lawyer or it is not sunny. It is cloudy or Robert is not a lawyer. If it is cloudy, then it is sunny.
If it is sunny, then Robert is a lawyer can be inferred via the rewriting rule. If Robert were a lawyer, then it is cloudy can be inferred via the rewriting rule.