Consider the following premises. For all x_5, if x_5 were poor, then x_5 is a janitor. For all x_5, x_5 is poor. For all x_5, x_5 is not a janitor. Can we infer the following from them? For all x_5, x_5 is curious.
 From the fact that for all x_5, x_5 is poor we can infer that for all x_5, x_5 is poor or x_5 is curious. From the fact that for all x_5, if x_5 were poor, then x_5 is a janitor, and that for all x_5, x_5 is not a janitor we can infer that for all x_5, x_5 is not poor. Finally, from the fact that for all x_5, x_5 is poor or x_5 is curious, and that for all x_5, x_5 is not poor we can infer that for all x_5, x_5 is curious. Therefore, the answer is yes. Notice, however, that the premises were contradictory, so we can infer anything from them.