Consider the following premises. For all x_9, if x_9 were a nurse, then x_9 is an astronaut. For all x_9, if x_9 drinks water, then x_9 is not a nurse. For all x_9, if x_9 were an astronaut, then x_9 is a nurse. For all x_9, x_9 is an astronaut. Can we infer the following from them? There is at least one x_9 for which x_9 will drink water.
 From the fact that for all x_9, if x_9 were a nurse, then x_9 is an astronaut, and that for all x_9, if x_9 were an astronaut, then x_9 is a nurse we can infer that for all x_9, x_9 is a nurse if and only if x_9 is an astronaut. From the fact that for all x_9, x_9 is a nurse if and only if x_9 is an astronaut we can infer that for all x_9, if x_9 were an astronaut, then x_9 is a nurse. From the fact that for all x_9, if x_9 were an astronaut, then x_9 is a nurse, and that for all x_9, x_9 is an astronaut we can infer that for all x_9, x_9 is a nurse. Finally, from the fact that for all x_9, if x_9 drinks water, then x_9 is not a nurse, and that for all x_9, x_9 is a nurse we can infer that for all x_9, x_9 will not drink water, which contradicts that There is at least one x_9 for which x_9 will drink water. Therefore, the answer is no.