Consider the following premises. For all x_9, if x_9 writes a letter, then x_9 is reading a book. For all x_9, if x_9 were a janitor, then x_9 is reading a book. There is at least one x_9 for which x_9 will write a letter or x_9 is a janitor. For all x_9, if x_9 reads a book, then x_9 is driving a car. Can we infer the following from them? There is at least one x_9 for which x_9 will drive a car.
 From the fact that for all x_9, if x_9 writes a letter, then x_9 is reading a book, that for all x_9, if x_9 were a janitor, then x_9 is reading a book, and that there is at least one x_9 for which x_9 will write a letter or x_9 is a janitor we can infer that there is at least one x_9 for which x_9 will read a book. Finally, from the fact that for all x_9, if x_9 reads a book, then x_9 is driving a car, and that there is at least one x_9 for which x_9 will read a book we can infer that there is at least one x_9 for which x_9 will drive a car. Therefore, the answer is yes.