Consider the following premises. For all x_12, x_12 will sleep. For all x_12, x_12 is a bartender. If James were an electrician, then James is not sleeping. Can we infer the following from them? If we can, name the inference rule being used: James is an electrician.
 From the fact that for all x_12, x_12 will sleep, and that for all x_12, x_12 is a bartender we can infer that for all x_12, x_12 will sleep and x_12 is a bartender via universal conjunction. From the fact that for all x_12, x_12 will sleep and x_12 is a bartender we can infer that James is sleeping and James is a bartender via universal instantiation. From the fact that James is sleeping and James is a bartender we can infer that James is sleeping via simplification. Finally, from the fact that if James were an electrician, then James is not sleeping, and that James is sleeping we can infer that James is not an electrician via modus tollens, which contradicts that James is an electrician. Therefore, the answer is no.