What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one y for which if y drives a car, then y is playing a game. For all y, if y drives a car, then y is playing a game. For all y, y will play a game if and only if y will drive a car.
For all y, if y plays a game, then y is driving a car. For all y, if y drives a car, then y is playing a game.