Consider the following premises. There is at least one x_10 for which x_10 will play a game and x_10 is a cashier. For all x_10, if x_10 were a scientist, then x_10 is drinking water. For all x_10, x_10 is a scientist. Can we infer the following from them? There is at least one x_10 for which x_10 will play a game and x_10 will drink water.
 From the fact that for all x_10, if x_10 were a scientist, then x_10 is drinking water, and that for all x_10, x_10 is a scientist we can infer that for all x_10, x_10 will drink water. From the fact that there is at least one x_10 for which x_10 will play a game and x_10 is a cashier we can infer that there is at least one x_10 for which x_10 will play a game. Finally, from the fact that there is at least one x_10 for which x_10 will play a game, and that for all x_10, x_10 will drink water we can infer that there is at least one x_10 for which x_10 will play a game and x_10 will drink water. Therefore, the answer is yes.