Consider the following premises. There is at least one x_9 for which x_9 will not play tennis. For all x_9, x_9 is an electrician if and only if x_9 will play tennis. For all x_9, x_9 is an electrician. Can we infer the following from them? There is at least one x_9 for which x_9 will read a book.
 From the fact that for all x_9, x_9 is an electrician we can infer that for all x_9, x_9 is an electrician or x_9 will read a book. From the fact that for all x_9, x_9 is an electrician if and only if x_9 will play tennis, and that there is at least one x_9 for which x_9 will not play tennis we can infer that there is at least one x_9 for which x_9 is not an electrician. Finally, from the fact that for all x_9, x_9 is an electrician or x_9 will read a book, and that there is at least one x_9 for which x_9 is not an electrician we can infer that there is at least one x_9 for which x_9 will read a book. Therefore, the answer is yes. Notice, however, that the premises were contradictory, so we can infer anything from them.