Consider the following premises. There is at least one z_2 for which if z_2 cooks, then z_2 is an electrician. For all z_2, if z_2 were an electrician, then z_2 is cooking. For all z_2, z_2 will not cook. Can we infer the following from them? If we can, name the inference rule being used: There is at least one z_2 for which if z_2 cooks, then z_2 is an electrician.
That is one of the premises. Therefore, the answer is yes.