Consider the following premises. For all x_5, if x_5 were curious, then x_5 is a server. For all x_5, if x_5 writes a letter, then x_5 is a server. For all x_5, x_5 is curious and x_5 is rich. Can we infer the following from them? There is at least one x_5 for which x_5 is not a server.
 From the fact that for all x_5, x_5 is curious and x_5 is rich we can infer that for all x_5, x_5 is curious. From the fact that for all x_5, x_5 is curious we can infer that for all x_5, x_5 is curious or x_5 will write a letter. Finally, from the fact that for all x_5, if x_5 were curious, then x_5 is a server, that for all x_5, if x_5 writes a letter, then x_5 is a server, and that for all x_5, x_5 is curious or x_5 will write a letter we can infer that for all x_5, x_5 is a server, which contradicts that There is at least one x_5 for which x_5 is not a server. Therefore, the answer is no.