Consider the following premises. For all x_15, x_15 will drive a car if and only if x_15 is a server. For all x_15, if x_15 plays a game, then x_15 is a musician. For all x_15, x_15 will play a game if and only if x_15 is a server. For all x_15, if x_15 sleeps, then x_15 is a server. For all x_15, x_15 will sleep or x_15 will drive a car. Can we infer the following from them? For all x_15, x_15 is a musician.
 From the fact that for all x_15, x_15 will drive a car if and only if x_15 is a server we can infer that for all x_15, if x_15 drives a car, then x_15 is a server. From the fact that for all x_15, if x_15 sleeps, then x_15 is a server, that for all x_15, if x_15 drives a car, then x_15 is a server, and that for all x_15, x_15 will sleep or x_15 will drive a car we can infer that for all x_15, x_15 is a server. From the fact that for all x_15, x_15 will play a game if and only if x_15 is a server we can infer that for all x_15, if x_15 were a server, then x_15 is playing a game. From the fact that for all x_15, if x_15 were a server, then x_15 is playing a game, and that for all x_15, if x_15 plays a game, then x_15 is a musician we can infer that for all x_15, if x_15 were a server, then x_15 is a musician. Finally, from the fact that for all x_15, if x_15 were a server, then x_15 is a musician, and that for all x_15, x_15 is a server we can infer that for all x_15, x_15 is a musician. Therefore, the answer is yes.