Consider the following premises. For all x_12, if x_12 drinks water, then x_12 is playing a game. There is at least one x_12 for which x_12 will sleep. For all x_12, if x_12 reads a book, then x_12 is not sleeping. For all x_12, if x_12 plays a game, then x_12 is reading a book. Can we infer the following from them? There is at least one x_12 for which x_12 will not drink water.
 From the fact that for all x_12, if x_12 reads a book, then x_12 is not sleeping, and that there is at least one x_12 for which x_12 will sleep we can infer that there is at least one x_12 for which x_12 will not read a book. From the fact that for all x_12, if x_12 plays a game, then x_12 is reading a book, and that there is at least one x_12 for which x_12 will not read a book we can infer that there is at least one x_12 for which x_12 will not play a game. Finally, from the fact that for all x_12, if x_12 drinks water, then x_12 is playing a game, and that there is at least one x_12 for which x_12 will not play a game we can infer that there is at least one x_12 for which x_12 will not drink water. Therefore, the answer is yes.