Consider the following premises. For all x_9, x_9 is not poor. There is at least one x_9 for which x_9 is poor if and only if x_9 is a soldier. For all x_9, x_9 is a soldier. Can we infer the following from them? If we can, name the inference rule being used: For all x_9, x_9 will not work.
The premises are contradictory and we can infer anything from them. Therefore, the answer is yes.