Consider the following premises. There is at least one x_3 for which if x_3 were curious, then x_3 is a doctor. For all x_3, x_3 will not drive a car or x_3 will play a game. For all x_3, x_3 will drive a car or x_3 is curious. For all x_3, if x_3 plays a game, then x_3 is drinking water. For all x_3, if x_3 were a doctor, then x_3 is drinking water. Can we infer the following from them? There is at least one x_3 for which x_3 will drink water.
 From the fact that there is at least one x_3 for which if x_3 were curious, then x_3 is a doctor, and that for all x_3, if x_3 were a doctor, then x_3 is drinking water we can infer that there is at least one x_3 for which if x_3 were curious, then x_3 is drinking water. From the fact that for all x_3, x_3 will drive a car or x_3 is curious, and that for all x_3, x_3 will not drive a car or x_3 will play a game we can infer that for all x_3, x_3 is curious or x_3 will play a game. Finally, from the fact that there is at least one x_3 for which if x_3 were curious, then x_3 is drinking water, that for all x_3, if x_3 plays a game, then x_3 is drinking water, and that for all x_3, x_3 is curious or x_3 will play a game we can infer that there is at least one x_3 for which x_3 will drink water. Therefore, the answer is yes.