Consider the following premises. For all x_17, if x_17 were an electrician, then x_17 is sleeping. For all x_17, if x_17 plays a game, then x_17 is sleeping. For all x_17, if x_17 plays squash, then x_17 is playing a game. There is at least one x_17 for which x_17 is not an electrician. For all x_17, if x_17 sleeps, then x_17 is an electrician. Can we infer the following from them? There is at least one x_17 for which x_17 will not play squash.
 From the fact that for all x_17, if x_17 were an electrician, then x_17 is sleeping, and that for all x_17, if x_17 sleeps, then x_17 is an electrician we can infer that for all x_17, x_17 is an electrician if and only if x_17 will sleep. From the fact that for all x_17, x_17 is an electrician if and only if x_17 will sleep, and that there is at least one x_17 for which x_17 is not an electrician we can infer that there is at least one x_17 for which x_17 will not sleep. From the fact that for all x_17, if x_17 plays a game, then x_17 is sleeping, and that there is at least one x_17 for which x_17 will not sleep we can infer that there is at least one x_17 for which x_17 will not play a game. Finally, from the fact that for all x_17, if x_17 plays squash, then x_17 is playing a game, and that there is at least one x_17 for which x_17 will not play a game we can infer that there is at least one x_17 for which x_17 will not play squash. Therefore, the answer is yes.