Consider the following premises. For all x_6, x_6 is not a scientist. For all x_6, x_6 is not rich or x_6 is a server. For all x_6, x_6 is rich or x_6 is a scientist. Can we infer the following from them? If we can, name the inference rule being used: For all x_6, x_6 is not a scientist.
That is one of the premises. Therefore, the answer is yes.