Consider the following premises. For all x_7, if x_7 were a carpenter, then x_7 is not a server. There is at least one x_7 for which if x_7 were fast, then x_7 is a server. For all x_7, if x_7 sleeps, then x_7 is a server. For all x_7, x_7 is fast or x_7 will sleep. Can we infer the following from them? For all x_7, x_7 is a carpenter.
 From the fact that there is at least one x_7 for which if x_7 were fast, then x_7 is a server, that for all x_7, if x_7 sleeps, then x_7 is a server, and that for all x_7, x_7 is fast or x_7 will sleep we can infer that there is at least one x_7 for which x_7 is a server. Finally, from the fact that for all x_7, if x_7 were a carpenter, then x_7 is not a server, and that there is at least one x_7 for which x_7 is a server we can infer that there is at least one x_7 for which x_7 is not a carpenter, which contradicts that For all x_7, x_7 is a carpenter. Therefore, the answer is no.