Consider the following premises. Some bartenders will read a book. For all z, if z were an office clerk, then z is sleeping. For all z, if z drives a car, then z is sleeping. For all z, z is an office clerk. Can we infer the following from them? Some bartenders will sleep.
 From the fact that some bartenders will read a book we can infer that there is at least one z for which z is a bartender. From the fact that for all z, z is an office clerk we can infer that for all z, z is an office clerk or z will drive a car. From the fact that for all z, if z were an office clerk, then z is sleeping, that for all z, if z drives a car, then z is sleeping, and that for all z, z is an office clerk or z will drive a car we can infer that for all z, z will sleep. Finally, from the fact that there is at least one z for which z is a bartender, and that for all z, z will sleep we can infer that some bartenders will sleep. Therefore, the answer is yes.