Consider the following premises. For all x_9, if x_9 makes tea, then x_9 is drinking water. For all x_9, x_9 will read a book if and only if x_9 is a janitor. There is at least one x_9 for which if x_9 reads a book, then x_9 is making tea. For all x_9, x_9 will not drink water. Can we infer the following from them? For all x_9, x_9 is a janitor.
 From the fact that for all x_9, if x_9 makes tea, then x_9 is drinking water, and that for all x_9, x_9 will not drink water we can infer that for all x_9, x_9 will not make tea. From the fact that there is at least one x_9 for which if x_9 reads a book, then x_9 is making tea, and that for all x_9, x_9 will not make tea we can infer that there is at least one x_9 for which x_9 will not read a book. Finally, from the fact that for all x_9, x_9 will read a book if and only if x_9 is a janitor, and that there is at least one x_9 for which x_9 will not read a book we can infer that there is at least one x_9 for which x_9 is not a janitor, which contradicts that For all x_9, x_9 is a janitor. Therefore, the answer is no.