What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_9, x_9 will not sleep. For all x_9, x_9 will play a game and x_9 will take a plane. For all x_9, x_9 will sleep or x_9 will work.
For all x_9, x_9 will work. For all x_9, x_9 will play a game. For all x_9, x_9 will take a plane.