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 Jessica plays squash, then James is driving a car. Jessica is playing squash or Richard is not an artist. James is not driving a car.
Jessica is not playing squash can be inferred via the modus tollens rule. If Richard were an artist, then Jessica is playing squash can be inferred via the rewriting rule.