Consider the following premises. For all x_6, if x_6 works, then x_6 is driving a car. For all x_6, if x_6 works, then x_6 is rich. For all x_6, x_6 is not rich. For all x_6, if x_6 drives a car, then x_6 is sleeping. For all x_6, if x_6 sleeps, then x_6 is working. Can we infer the following from them? There is at least one x_6 for which x_6 will sleep.
 From the fact that for all x_6, if x_6 works, then x_6 is driving a car, and that for all x_6, if x_6 drives a car, then x_6 is sleeping we can infer that for all x_6, if x_6 works, then x_6 is sleeping. From the fact that for all x_6, if x_6 works, then x_6 is rich, and that for all x_6, x_6 is not rich we can infer that for all x_6, x_6 will not work. From the fact that for all x_6, if x_6 works, then x_6 is sleeping, and that for all x_6, if x_6 sleeps, then x_6 is working we can infer that for all x_6, x_6 will work if and only if x_6 will sleep. Finally, from the fact that for all x_6, x_6 will work if and only if x_6 will sleep, and that for all x_6, x_6 will not work we can infer that for all x_6, x_6 will not sleep, which contradicts that There is at least one x_6 for which x_6 will sleep. Therefore, the answer is no.