Consider the following premises. For all x_7, x_7 is poor and x_7 is a janitor. For all x_7, x_7 is an electrician. For all x_7, if x_7 were poor, then x_7 is a nurse. Can we infer the following from them? For all x_7, x_7 is a nurse and x_7 is an electrician.
 From the fact that for all x_7, x_7 is poor and x_7 is a janitor we can infer that for all x_7, x_7 is poor. From the fact that for all x_7, if x_7 were poor, then x_7 is a nurse, and that for all x_7, x_7 is poor we can infer that for all x_7, x_7 is a nurse. Finally, from the fact that for all x_7, x_7 is a nurse, and that for all x_7, x_7 is an electrician we can infer that for all x_7, x_7 is a nurse and x_7 is an electrician. Therefore, the answer is yes.