What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x_8, x_8 is a cashier and x_8 will sleep. For all x_8, x_8 is a nurse. For all x_8, if x_8 were a nurse, then x_8 is playing tennis.
For all x_8, x_8 will play tennis. For all x_8, x_8 is a cashier. For all x_8, x_8 will sleep.