Consider the following premises. For all z_4, z_4 will read a book if and only if z_4 is a scientist. For all z_4, if z_4 were a scientist, then z_4 is rich. There is at least one z_4 for which if z_4 were rich, then z_4 is a scientist. For all z_4, z_4 is not rich. Can we infer the following from them? For all z_4, z_4 will read a book.
 From the fact that there is at least one z_4 for which if z_4 were rich, then z_4 is a scientist, and that for all z_4, if z_4 were a scientist, then z_4 is rich we can infer that there is at least one z_4 for which z_4 is rich if and only if z_4 is a scientist. From the fact that there is at least one z_4 for which z_4 is rich if and only if z_4 is a scientist, and that for all z_4, z_4 is not rich we can infer that there is at least one z_4 for which z_4 is not a scientist. Finally, from the fact that for all z_4, z_4 will read a book if and only if z_4 is a scientist, and that there is at least one z_4 for which z_4 is not a scientist we can infer that there is at least one z_4 for which z_4 will not read a book, which contradicts that For all z_4, z_4 will read a book. Therefore, the answer is no.